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about_flags.cc
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/about_flags.h"
#include <algorithm>
#include <iterator>
#include <map>
#include <set>
#include <utility>
#include "ash/ash_switches.h"
#include "base/command_line.h"
#include "base/memory/singleton.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "cc/base/switches.h"
#include "chrome/browser/bookmarks/enhanced_bookmarks_features.h"
#include "chrome/browser/flags_storage.h"
#include "chrome/common/chrome_content_client.h"
#include "chrome/common/chrome_switches.h"
#include "components/autofill/core/common/autofill_switches.h"
#include "components/nacl/common/nacl_switches.h"
#include "content/public/browser/user_metrics.h"
#include "extensions/common/switches.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "grit/google_chrome_strings.h"
#include "media/base/media_switches.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/ui_base_switches.h"
#include "ui/display/display_switches.h"
#include "ui/events/event_switches.h"
#include "ui/gfx/switches.h"
#include "ui/gl/gl_switches.h"
#include "ui/keyboard/keyboard_switches.h"
#include "ui/message_center/message_center_switches.h"
#include "ui/native_theme/native_theme_switches.h"
#include "ui/views/views_switches.h"
#if defined(USE_ASH)
#include "ash/ash_switches.h"
#endif
#if defined(OS_CHROMEOS)
#include "chromeos/chromeos_switches.h"
#include "third_party/cros_system_api/switches/chrome_switches.h"
#endif
#if defined(ENABLE_APP_LIST)
#include "ui/app_list/app_list_switches.h"
#endif
using base::UserMetricsAction;
namespace about_flags {
// Macros to simplify specifying the type.
#define SINGLE_VALUE_TYPE_AND_VALUE(command_line_switch, switch_value) \
Experiment::SINGLE_VALUE, \
command_line_switch, switch_value, NULL, NULL, NULL, 0
#define SINGLE_VALUE_TYPE(command_line_switch) \
SINGLE_VALUE_TYPE_AND_VALUE(command_line_switch, "")
#define ENABLE_DISABLE_VALUE_TYPE_AND_VALUE(enable_switch, enable_value, \
disable_switch, disable_value) \
Experiment::ENABLE_DISABLE_VALUE, enable_switch, enable_value, \
disable_switch, disable_value, NULL, 3
#define ENABLE_DISABLE_VALUE_TYPE(enable_switch, disable_switch) \
ENABLE_DISABLE_VALUE_TYPE_AND_VALUE(enable_switch, "", disable_switch, "")
#define MULTI_VALUE_TYPE(choices) \
Experiment::MULTI_VALUE, NULL, NULL, NULL, NULL, choices, arraysize(choices)
namespace {
const unsigned kOsAll = kOsMac | kOsWin | kOsLinux | kOsCrOS | kOsAndroid;
const unsigned kOsDesktop = kOsMac | kOsWin | kOsLinux | kOsCrOS;
// Adds a |StringValue| to |list| for each platform where |bitmask| indicates
// whether the experiment is available on that platform.
void AddOsStrings(unsigned bitmask, base::ListValue* list) {
struct {
unsigned bit;
const char* const name;
} kBitsToOs[] = {
{kOsMac, "Mac"},
{kOsWin, "Windows"},
{kOsLinux, "Linux"},
{kOsCrOS, "Chrome OS"},
{kOsAndroid, "Android"},
{kOsCrOSOwnerOnly, "Chrome OS (owner only)"},
};
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kBitsToOs); ++i)
if (bitmask & kBitsToOs[i].bit)
list->Append(new base::StringValue(kBitsToOs[i].name));
}
// Convert switch constants to proper CommandLine::StringType strings.
CommandLine::StringType GetSwitchString(const std::string& flag) {
CommandLine cmd_line(CommandLine::NO_PROGRAM);
cmd_line.AppendSwitch(flag);
DCHECK(cmd_line.argv().size() == 2);
return cmd_line.argv()[1];
}
// Scoops flags from a command line.
std::set<CommandLine::StringType> ExtractFlagsFromCommandLine(
const CommandLine& cmdline) {
std::set<CommandLine::StringType> flags;
// First do the ones between --flag-switches-begin and --flag-switches-end.
CommandLine::StringVector::const_iterator first =
std::find(cmdline.argv().begin(), cmdline.argv().end(),
GetSwitchString(switches::kFlagSwitchesBegin));
CommandLine::StringVector::const_iterator last =
std::find(cmdline.argv().begin(), cmdline.argv().end(),
GetSwitchString(switches::kFlagSwitchesEnd));
if (first != cmdline.argv().end() && last != cmdline.argv().end())
flags.insert(first + 1, last);
#if defined(OS_CHROMEOS)
// Then add those between --policy-switches-begin and --policy-switches-end.
first = std::find(cmdline.argv().begin(), cmdline.argv().end(),
GetSwitchString(chromeos::switches::kPolicySwitchesBegin));
last = std::find(cmdline.argv().begin(), cmdline.argv().end(),
GetSwitchString(chromeos::switches::kPolicySwitchesEnd));
if (first != cmdline.argv().end() && last != cmdline.argv().end())
flags.insert(first + 1, last);
#endif
return flags;
}
const Experiment::Choice kEnableCompositingForFixedPositionChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kEnableCompositingForFixedPosition, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableCompositingForFixedPosition, ""},
{ IDS_FLAGS_COMPOSITING_FOR_FIXED_POSITION_HIGH_DPI,
switches::kEnableHighDpiCompositingForFixedPosition, ""}
};
const Experiment::Choice kEnableCompositingForTransitionChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kEnableCompositingForTransition, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableCompositingForTransition, ""},
};
const Experiment::Choice kEnableAcceleratedFixedRootBackgroundChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kEnableAcceleratedFixedRootBackground, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableAcceleratedFixedRootBackground, ""},
};
const Experiment::Choice kTouchEventsChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_AUTOMATIC, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kTouchEvents,
switches::kTouchEventsEnabled },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kTouchEvents,
switches::kTouchEventsDisabled }
};
const Experiment::Choice kTouchOptimizedUIChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_AUTOMATIC, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kTouchOptimizedUI,
switches::kTouchOptimizedUIEnabled },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kTouchOptimizedUI,
switches::kTouchOptimizedUIDisabled }
};
#if defined(USE_AURA)
const Experiment::Choice kOverscrollHistoryNavigationChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kOverscrollHistoryNavigation,
"0" },
{ IDS_OVERSCROLL_HISTORY_NAVIGATION_SIMPLE_UI,
switches::kOverscrollHistoryNavigation,
"2" }
};
#endif
const Experiment::Choice kNaClDebugMaskChoices[] = {
// Secure shell can be used on ChromeOS for forwarding the TCP port opened by
// debug stub to a remote machine. Since secure shell uses NaCl, we usually
// want to avoid debugging that. The PNaCl translator is also a NaCl module,
// so by default we want to avoid debugging that.
// NOTE: As the default value must be the empty string, the mask excluding
// the PNaCl translator and secure shell is substituted elsewhere.
{ IDS_NACL_DEBUG_MASK_CHOICE_EXCLUDE_UTILS_PNACL, "", "" },
{ IDS_NACL_DEBUG_MASK_CHOICE_DEBUG_ALL, switches::kNaClDebugMask, "*://*" },
{ IDS_NACL_DEBUG_MASK_CHOICE_INCLUDE_DEBUG,
switches::kNaClDebugMask, "*://*/*debug.nmf" }
};
const Experiment::Choice kImplSidePaintingChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kEnableImplSidePainting, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableImplSidePainting, ""}
};
const Experiment::Choice kLCDTextChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED, switches::kEnableLCDText, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED, switches::kDisableLCDText, ""}
};
#ifndef USE_AURA
const Experiment::Choice kDelegatedRendererChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kEnableDelegatedRenderer, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableDelegatedRenderer, ""}
};
#endif
const Experiment::Choice kMaxTilesForInterestAreaChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_MAX_TILES_FOR_INTEREST_AREA_SHORT,
cc::switches::kMaxTilesForInterestArea, "64"},
{ IDS_FLAGS_MAX_TILES_FOR_INTEREST_AREA_TALL,
cc::switches::kMaxTilesForInterestArea, "128"},
{ IDS_FLAGS_MAX_TILES_FOR_INTEREST_AREA_GRANDE,
cc::switches::kMaxTilesForInterestArea, "256"},
{ IDS_FLAGS_MAX_TILES_FOR_INTEREST_AREA_VENTI,
cc::switches::kMaxTilesForInterestArea, "512"}
};
const Experiment::Choice kDefaultTileWidthChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_DEFAULT_TILE_WIDTH_SHORT,
switches::kDefaultTileWidth, "128"},
{ IDS_FLAGS_DEFAULT_TILE_WIDTH_TALL,
switches::kDefaultTileWidth, "256"},
{ IDS_FLAGS_DEFAULT_TILE_WIDTH_GRANDE,
switches::kDefaultTileWidth, "512"},
{ IDS_FLAGS_DEFAULT_TILE_WIDTH_VENTI,
switches::kDefaultTileWidth, "1024"}
};
const Experiment::Choice kDefaultTileHeightChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_DEFAULT_TILE_HEIGHT_SHORT,
switches::kDefaultTileHeight, "128"},
{ IDS_FLAGS_DEFAULT_TILE_HEIGHT_TALL,
switches::kDefaultTileHeight, "256"},
{ IDS_FLAGS_DEFAULT_TILE_HEIGHT_GRANDE,
switches::kDefaultTileHeight, "512"},
{ IDS_FLAGS_DEFAULT_TILE_HEIGHT_VENTI,
switches::kDefaultTileHeight, "1024"}
};
const Experiment::Choice kSimpleCacheBackendChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kUseSimpleCacheBackend, "off" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kUseSimpleCacheBackend, "on"}
};
#if defined(USE_AURA)
const Experiment::Choice kTabCaptureUpscaleQualityChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_FAST,
switches::kTabCaptureUpscaleQuality, "fast" },
{ IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_GOOD,
switches::kTabCaptureUpscaleQuality, "good" },
{ IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_BEST,
switches::kTabCaptureUpscaleQuality, "best" },
};
const Experiment::Choice kTabCaptureDownscaleQualityChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_FAST,
switches::kTabCaptureDownscaleQuality, "fast" },
{ IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_GOOD,
switches::kTabCaptureDownscaleQuality, "good" },
{ IDS_FLAGS_TAB_CAPTURE_SCALE_QUALITY_BEST,
switches::kTabCaptureDownscaleQuality, "best" },
};
#endif
#if defined(USE_AURA) || defined(OS_LINUX)
const Experiment::Choice kOverlayScrollbarChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kEnableOverlayScrollbar, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableOverlayScrollbar, ""}
};
#endif
const Experiment::Choice kMapImageChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kEnableMapImage, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableMapImage, ""}
};
#if defined(OS_ANDROID)
const Experiment::Choice kZeroSuggestExperimentsChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_ZERO_SUGGEST_MOST_VISITED,
switches::kEnableZeroSuggestMostVisited, ""},
{ IDS_FLAGS_ZERO_SUGGEST_ETHER_SERP,
switches::kEnableZeroSuggestEtherSerp, ""},
{ IDS_FLAGS_ZERO_SUGGEST_ETHER_NO_SERP,
switches::kEnableZeroSuggestEtherNoSerp, ""},
{ IDS_FLAGS_ZERO_SUGGEST_PERSONALIZED,
switches::kEnableZeroSuggestPersonalized, ""},
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableZeroSuggest, ""}
};
#endif
const Experiment::Choice kNumRasterThreadsChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_NUM_RASTER_THREADS_ONE, switches::kNumRasterThreads, "1" },
{ IDS_FLAGS_NUM_RASTER_THREADS_TWO, switches::kNumRasterThreads, "2" },
{ IDS_FLAGS_NUM_RASTER_THREADS_THREE, switches::kNumRasterThreads, "3" },
{ IDS_FLAGS_NUM_RASTER_THREADS_FOUR, switches::kNumRasterThreads, "4" }
};
const Experiment::Choice kEnableGpuRasterizationChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
switches::kEnableGpuRasterization, "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableGpuRasterization, "" },
{ IDS_FLAGS_FORCE_GPU_RASTERIZATION,
switches::kForceGpuRasterization, "" },
};
// We're using independent flags here (as opposed to a common flag with
// different values) to be able to enable/disable the entire experience
// associated with this feature server-side from the FieldTrial (the complete
// experience includes other flag changes as well). It is not currently possible
// to do that with "flag=value" flags.
const Experiment::Choice kSearchButtonInOmniboxChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
switches::kDisableSearchButtonInOmnibox, ""},
{ IDS_FLAGS_SEARCH_BUTTON_IN_OMNIBOX_ENABLE_FOR_STR,
switches::kEnableSearchButtonInOmniboxForStr, ""},
{ IDS_FLAGS_SEARCH_BUTTON_IN_OMNIBOX_ENABLE_FOR_STR_OR_IIP,
switches::kEnableSearchButtonInOmniboxForStrOrIip, ""},
{ IDS_FLAGS_SEARCH_BUTTON_IN_OMNIBOX_ENABLED,
switches::kEnableSearchButtonInOmniboxAlways, ""}
};
// See comment above for kSearchButtonInOmniboxChoices. The same reasoning
// applies here.
const Experiment::Choice kOriginChipChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED, switches::kDisableOriginChip, ""},
{ IDS_FLAGS_ORIGIN_CHIP_TRAILING_LOCATION_BAR,
switches::kEnableOriginChipTrailingLocationBar, ""},
{ IDS_FLAGS_ORIGIN_CHIP_LEADING_LOCATION_BAR,
switches::kEnableOriginChipLeadingLocationBar, ""},
{ IDS_FLAGS_ORIGIN_CHIP_LEADING_MENU_BUTTON,
switches::kEnableOriginChipLeadingMenuButton, ""}
};
const Experiment::Choice kOriginChipV2Choices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED, switches::kDisableOriginChipV2, ""},
{ IDS_FLAGS_ORIGIN_CHIP_V2_HIDE_ON_MOUSE_RELEASE,
switches::kEnableOriginChipV2HideOnMouseRelease, ""},
{ IDS_FLAGS_ORIGIN_CHIP_V2_HIDE_ON_USER_INPUT,
switches::kEnableOriginChipV2HideOnUserInput, ""}
};
const Experiment::Choice kNotificationCenterTrayBehaviorChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_NOTIFICATION_TRAY_BEHAVIOR_NEVER,
message_center::switches::kNotificationCenterTrayBehavior, "never" },
{ IDS_FLAGS_NOTIFICATION_TRAY_BEHAVIOR_ALWAYS,
message_center::switches::kNotificationCenterTrayBehavior, "always" },
{ IDS_FLAGS_NOTIFICATION_TRAY_BEHAVIOR_UNREAD,
message_center::switches::kNotificationCenterTrayBehavior, "unread" }
};
const Experiment::Choice kTouchScrollingModeChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_FLAGS_TOUCH_SCROLLING_MODE_TOUCHCANCEL,
switches::kTouchScrollingMode,
switches::kTouchScrollingModeTouchcancel },
{ IDS_FLAGS_TOUCH_SCROLLING_MODE_ABSORB_TOUCHMOVE,
switches::kTouchScrollingMode,
switches::kTouchScrollingModeAbsorbTouchmove },
{ IDS_FLAGS_TOUCH_SCROLLING_MODE_SYNC_TOUCHMOVE,
switches::kTouchScrollingMode,
switches::kTouchScrollingModeSyncTouchmove },
};
#if defined(ENABLE_APP_LIST)
const Experiment::Choice kEnableSyncAppListChoices[] = {
{ IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
app_list::switches::kEnableSyncAppList, "" },
{ IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
app_list::switches::kDisableSyncAppList, "" },
};
#endif
// RECORDING USER METRICS FOR FLAGS:
// -----------------------------------------------------------------------------
// The first line of the experiment is the internal name. If you'd like to
// gather statistics about the usage of your flag, you should append a marker
// comment to the end of the feature name, like so:
// "my-special-feature", // FLAGS:RECORD_UMA
//
// After doing that, run
// tools/metrics/actions/extract_actions.py
// to add the metric to actions.xml (which will enable UMA to record your
// feature flag), then update the <owner>s and <description> sections. Make sure
// to include the actions.xml file when you upload your code for review!
//
// After your feature has shipped under a flag, you can locate the metrics under
// the action name AboutFlags_internal-action-name. Actions are recorded once
// per startup, so you should divide this number by AboutFlags_StartupTick to
// get a sense of usage. Note that this will not be the same as number of users
// with a given feature enabled because users can quit and relaunch the
// application multiple times over a given time interval. The dashboard also
// shows you how many (metrics reporting) users have enabled the flag over the
// last seven days. However, note that this is not the same as the number of
// users who have the flag enabled, since enabling the flag happens once,
// whereas running with the flag enabled happens until the user flips the flag
// again.
// To add a new experiment add to the end of kExperiments. There are two
// distinct types of experiments:
// . SINGLE_VALUE: experiment is either on or off. Use the SINGLE_VALUE_TYPE
// macro for this type supplying the command line to the macro.
// . MULTI_VALUE: a list of choices, the first of which should correspond to a
// deactivated state for this lab (i.e. no command line option). To specify
// this type of experiment use the macro MULTI_VALUE_TYPE supplying it the
// array of choices.
// See the documentation of Experiment for details on the fields.
//
// When adding a new choice, add it to the end of the list.
const Experiment kExperiments[] = {
{
"conflicting-modules-check", // FLAGS:RECORD_UMA
IDS_FLAGS_CONFLICTS_CHECK_NAME,
IDS_FLAGS_CONFLICTS_CHECK_DESCRIPTION,
kOsWin,
SINGLE_VALUE_TYPE(switches::kConflictingModulesCheck)
},
{
"ignore-gpu-blacklist",
IDS_FLAGS_IGNORE_GPU_BLACKLIST_NAME,
IDS_FLAGS_IGNORE_GPU_BLACKLIST_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kIgnoreGpuBlacklist)
},
{
"force-compositing-mode-2",
IDS_FLAGS_FORCE_COMPOSITING_MODE_NAME,
IDS_FLAGS_FORCE_COMPOSITING_MODE_DESCRIPTION,
#if !defined(USE_AURA)
kOsLinux,
#else
0,
#endif
ENABLE_DISABLE_VALUE_TYPE(switches::kForceCompositingMode,
switches::kDisableForceCompositingMode)
},
{
"threaded-compositing-mode",
IDS_FLAGS_THREADED_COMPOSITING_MODE_NAME,
IDS_FLAGS_THREADED_COMPOSITING_MODE_DESCRIPTION,
#if !defined(USE_AURA)
kOsLinux,
#else
0,
#endif
ENABLE_DISABLE_VALUE_TYPE(switches::kEnableThreadedCompositing,
switches::kDisableThreadedCompositing)
},
{
"force-accelerated-composited-scrolling",
IDS_FLAGS_FORCE_ACCELERATED_OVERFLOW_SCROLL_MODE_NAME,
IDS_FLAGS_FORCE_ACCELERATED_OVERFLOW_SCROLL_MODE_DESCRIPTION,
kOsAll,
ENABLE_DISABLE_VALUE_TYPE(switches::kEnableAcceleratedOverflowScroll,
switches::kDisableAcceleratedOverflowScroll)
},
{
"force-universal-accelerated-composited-scrolling",
IDS_FLAGS_FORCE_UNIVERSAL_ACCELERATED_OVERFLOW_SCROLL_MODE_NAME,
IDS_FLAGS_FORCE_UNIVERSAL_ACCELERATED_OVERFLOW_SCROLL_MODE_DESCRIPTION,
kOsAll,
ENABLE_DISABLE_VALUE_TYPE(
switches::kEnableUniversalAcceleratedOverflowScroll,
switches::kDisableUniversalAcceleratedOverflowScroll)
},
#if defined(OS_WIN)
{
"enable-direct-write",
IDS_FLAGS_ENABLE_DIRECT_WRITE_NAME,
IDS_FLAGS_ENABLE_DIRECT_WRITE_DESCRIPTION,
kOsWin,
SINGLE_VALUE_TYPE(switches::kEnableDirectWrite)
},
#endif
{
"enable-experimental-canvas-features",
IDS_FLAGS_ENABLE_EXPERIMENTAL_CANVAS_FEATURES_NAME,
IDS_FLAGS_ENABLE_EXPERIMENTAL_CANVAS_FEATURES_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kEnableExperimentalCanvasFeatures)
},
{
"disable-accelerated-2d-canvas",
IDS_FLAGS_DISABLE_ACCELERATED_2D_CANVAS_NAME,
IDS_FLAGS_DISABLE_ACCELERATED_2D_CANVAS_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kDisableAccelerated2dCanvas)
},
{
"composited-layer-borders",
IDS_FLAGS_COMPOSITED_LAYER_BORDERS,
IDS_FLAGS_COMPOSITED_LAYER_BORDERS_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(cc::switches::kShowCompositedLayerBorders)
},
{
"show-fps-counter",
IDS_FLAGS_SHOW_FPS_COUNTER,
IDS_FLAGS_SHOW_FPS_COUNTER_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(cc::switches::kShowFPSCounter)
},
{
"disable-webgl",
IDS_FLAGS_DISABLE_WEBGL_NAME,
IDS_FLAGS_DISABLE_WEBGL_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kDisableExperimentalWebGL)
},
{
"disable-webrtc",
IDS_FLAGS_DISABLE_WEBRTC_NAME,
IDS_FLAGS_DISABLE_WEBRTC_DESCRIPTION,
kOsAndroid,
#if defined(OS_ANDROID)
SINGLE_VALUE_TYPE(switches::kDisableWebRTC)
#else
SINGLE_VALUE_TYPE("")
#endif
},
#if defined(ENABLE_WEBRTC)
{
"disable-device-enumeration",
IDS_FLAGS_DISABLE_DEVICE_ENUMERATION_NAME,
IDS_FLAGS_DISABLE_DEVICE_ENUMERATION_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kDisableDeviceEnumeration)
},
{
"disable-webrtc-hw-decoding",
IDS_FLAGS_DISABLE_WEBRTC_HW_DECODING_NAME,
IDS_FLAGS_DISABLE_WEBRTC_HW_DECODING_DESCRIPTION,
kOsAndroid | kOsCrOS,
SINGLE_VALUE_TYPE(switches::kDisableWebRtcHWDecoding)
},
{
"disable-webrtc-hw-encoding",
IDS_FLAGS_DISABLE_WEBRTC_HW_ENCODING_NAME,
IDS_FLAGS_DISABLE_WEBRTC_HW_ENCODING_DESCRIPTION,
kOsAndroid | kOsCrOS,
SINGLE_VALUE_TYPE(switches::kDisableWebRtcHWEncoding)
},
#endif
#if defined(OS_ANDROID)
{
"disable-webaudio",
IDS_FLAGS_DISABLE_WEBAUDIO_NAME,
IDS_FLAGS_DISABLE_WEBAUDIO_DESCRIPTION,
kOsAndroid,
SINGLE_VALUE_TYPE(switches::kDisableWebAudio)
},
#endif
{
"fixed-position-creates-stacking-context",
IDS_FLAGS_FIXED_POSITION_CREATES_STACKING_CONTEXT_NAME,
IDS_FLAGS_FIXED_POSITION_CREATES_STACKING_CONTEXT_DESCRIPTION,
kOsAll,
ENABLE_DISABLE_VALUE_TYPE(
switches::kEnableFixedPositionCreatesStackingContext,
switches::kDisableFixedPositionCreatesStackingContext)
},
{
"enable-compositing-for-fixed-position",
IDS_FLAGS_COMPOSITING_FOR_FIXED_POSITION_NAME,
IDS_FLAGS_COMPOSITING_FOR_FIXED_POSITION_DESCRIPTION,
kOsAll,
MULTI_VALUE_TYPE(kEnableCompositingForFixedPositionChoices)
},
{
"enable-compositing-for-transition",
IDS_FLAGS_COMPOSITING_FOR_TRANSITION_NAME,
IDS_FLAGS_COMPOSITING_FOR_TRANSITION_DESCRIPTION,
kOsAll,
MULTI_VALUE_TYPE(kEnableCompositingForTransitionChoices)
},
{
"enable-accelerated-fixed-root-background",
IDS_FLAGS_ACCELERATED_FIXED_ROOT_BACKGROUND_NAME,
IDS_FLAGS_ACCELERATED_FIXED_ROOT_BACKGROUND_DESCRIPTION,
kOsAll,
MULTI_VALUE_TYPE(kEnableAcceleratedFixedRootBackgroundChoices)
},
// TODO(bbudge): When NaCl is on by default, remove this flag entry.
{
"enable-nacl", // FLAGS:RECORD_UMA
IDS_FLAGS_ENABLE_NACL_NAME,
IDS_FLAGS_ENABLE_NACL_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kEnableNaCl)
},
{
"enable-nacl-debug", // FLAGS:RECORD_UMA
IDS_FLAGS_ENABLE_NACL_DEBUG_NAME,
IDS_FLAGS_ENABLE_NACL_DEBUG_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kEnableNaClDebug)
},
{
"disable-pnacl", // FLAGS:RECORD_UMA
IDS_FLAGS_DISABLE_PNACL_NAME,
IDS_FLAGS_DISABLE_PNACL_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kDisablePnacl)
},
{
"nacl-debug-mask", // FLAGS:RECORD_UMA
IDS_FLAGS_NACL_DEBUG_MASK_NAME,
IDS_FLAGS_NACL_DEBUG_MASK_DESCRIPTION,
kOsDesktop,
MULTI_VALUE_TYPE(kNaClDebugMaskChoices)
},
{
"extension-apis", // FLAGS:RECORD_UMA
IDS_FLAGS_EXPERIMENTAL_EXTENSION_APIS_NAME,
IDS_FLAGS_EXPERIMENTAL_EXTENSION_APIS_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(extensions::switches::kEnableExperimentalExtensionApis)
},
{
"extensions-on-chrome-urls",
IDS_FLAGS_EXTENSIONS_ON_CHROME_URLS_NAME,
IDS_FLAGS_EXTENSIONS_ON_CHROME_URLS_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(extensions::switches::kExtensionsOnChromeURLs)
},
{
"enable-fast-unload",
IDS_FLAGS_ENABLE_FAST_UNLOAD_NAME,
IDS_FLAGS_ENABLE_FAST_UNLOAD_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kEnableFastUnload)
},
{
"enable-adview",
IDS_FLAGS_ENABLE_ADVIEW_NAME,
IDS_FLAGS_ENABLE_ADVIEW_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kEnableAdview)
},
{
"enable-app-window-controls",
IDS_FLAGS_ENABLE_APP_WINDOW_CONTROLS_NAME,
IDS_FLAGS_ENABLE_APP_WINDOW_CONTROLS_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kEnableAppWindowControls)
},
{
"apps-new-install-bubble",
IDS_FLAGS_APPS_NEW_INSTALL_BUBBLE_NAME,
IDS_FLAGS_APPS_NEW_INSTALL_BUBBLE_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kAppsNewInstallBubble)
},
{
"disable-hyperlink-auditing",
IDS_FLAGS_DISABLE_HYPERLINK_AUDITING_NAME,
IDS_FLAGS_DISABLE_HYPERLINK_AUDITING_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kNoPings)
},
#if defined(OS_ANDROID)
{
"enable-new-ntp",
IDS_FLAGS_ENABLE_NEW_NTP,
IDS_FLAGS_ENABLE_NEW_NTP_DESCRIPTION,
kOsAndroid,
ENABLE_DISABLE_VALUE_TYPE(switches::kEnableNewNTP,
switches::kDisableNewNTP)
},
{
"contextual-search",
IDS_FLAGS_ENABLE_CONTEXTUAL_SEARCH,
IDS_FLAGS_ENABLE_CONTEXTUAL_SEARCH_DESCRIPTION,
kOsAndroid,
SINGLE_VALUE_TYPE(switches::kEnableContextualSearch)
},
#endif
{
"show-autofill-type-predictions",
IDS_FLAGS_SHOW_AUTOFILL_TYPE_PREDICTIONS_NAME,
IDS_FLAGS_SHOW_AUTOFILL_TYPE_PREDICTIONS_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(autofill::switches::kShowAutofillTypePredictions)
},
{
"enable-gesture-tap-highlight",
IDS_FLAGS_ENABLE_GESTURE_TAP_HIGHLIGHTING_NAME,
IDS_FLAGS_ENABLE_GESTURE_TAP_HIGHLIGHTING_DESCRIPTION,
kOsLinux | kOsCrOS | kOsWin | kOsAndroid,
ENABLE_DISABLE_VALUE_TYPE(switches::kEnableGestureTapHighlight,
switches::kDisableGestureTapHighlight)
},
{
"enable-smooth-scrolling", // FLAGS:RECORD_UMA
IDS_FLAGS_ENABLE_SMOOTH_SCROLLING_NAME,
IDS_FLAGS_ENABLE_SMOOTH_SCROLLING_DESCRIPTION,
// Can't expose the switch unless the code is compiled in.
// On by default for the Mac (different implementation in WebKit).
kOsLinux,
SINGLE_VALUE_TYPE(switches::kEnableSmoothScrolling)
},
#if defined(USE_AURA) || defined(OS_LINUX)
{
"overlay-scrollbars",
IDS_FLAGS_ENABLE_OVERLAY_SCROLLBARS_NAME,
IDS_FLAGS_ENABLE_OVERLAY_SCROLLBARS_DESCRIPTION,
// Uses the system preference on Mac (a different implementation).
// On Android, this is always enabled.
kOsLinux | kOsCrOS | kOsWin,
MULTI_VALUE_TYPE(kOverlayScrollbarChoices)
},
#endif
{
"enable-panels",
IDS_FLAGS_ENABLE_PANELS_NAME,
IDS_FLAGS_ENABLE_PANELS_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kEnablePanels)
},
{
// See http://crbug.com/120416 for how to remove this flag.
"save-page-as-mhtml", // FLAGS:RECORD_UMA
IDS_FLAGS_SAVE_PAGE_AS_MHTML_NAME,
IDS_FLAGS_SAVE_PAGE_AS_MHTML_DESCRIPTION,
kOsMac | kOsWin | kOsLinux,
SINGLE_VALUE_TYPE(switches::kSavePageAsMHTML)
},
{
"enable-autologin",
IDS_FLAGS_ENABLE_AUTOLOGIN_NAME,
IDS_FLAGS_ENABLE_AUTOLOGIN_DESCRIPTION,
kOsMac | kOsWin | kOsLinux,
SINGLE_VALUE_TYPE(switches::kEnableAutologin)
},
{
"enable-quic",
IDS_FLAGS_ENABLE_QUIC_NAME,
IDS_FLAGS_ENABLE_QUIC_DESCRIPTION,
kOsAll,
ENABLE_DISABLE_VALUE_TYPE(switches::kEnableQuic,
switches::kDisableQuic)
},
{
"enable-quic-https",
IDS_FLAGS_ENABLE_QUIC_HTTPS_NAME,
IDS_FLAGS_ENABLE_QUIC_HTTPS_DESCRIPTION,
kOsAll,
ENABLE_DISABLE_VALUE_TYPE(switches::kEnableQuicHttps,
switches::kDisableQuicHttps)
},
{
"enable-spdy4a2",
IDS_FLAGS_ENABLE_SPDY4A2_NAME,
IDS_FLAGS_ENABLE_SPDY4A2_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kEnableSpdy4a2)
},
{
"enable-http2-draft-04",
IDS_FLAGS_ENABLE_HTTP2_DRAFT_04_NAME,
IDS_FLAGS_ENABLE_HTTP2_DRAFT_04_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kEnableHttp2Draft04)
},
{
"enable-async-dns",
IDS_FLAGS_ENABLE_ASYNC_DNS_NAME,
IDS_FLAGS_ENABLE_ASYNC_DNS_DESCRIPTION,
kOsWin | kOsMac | kOsLinux | kOsCrOS,
ENABLE_DISABLE_VALUE_TYPE(switches::kEnableAsyncDns,
switches::kDisableAsyncDns)
},
{
"disable-webkit-media-source",
IDS_FLAGS_DISABLE_WEBKIT_MEDIA_SOURCE_NAME,
IDS_FLAGS_DISABLE_WEBKIT_MEDIA_SOURCE_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kDisableWebKitMediaSource)
},
{
"disable-unprefixed-media-source",
IDS_FLAGS_DISABLE_UNPREFIXED_MEDIA_SOURCE_NAME,
IDS_FLAGS_DISABLE_UNPREFIXED_MEDIA_SOURCE_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kDisableUnprefixedMediaSource)
},
{
"enable-encrypted-media",
IDS_FLAGS_ENABLE_ENCRYPTED_MEDIA_NAME,
IDS_FLAGS_ENABLE_ENCRYPTED_MEDIA_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kEnableEncryptedMedia)
},
{
"disable-prefixed-encrypted-media",
IDS_FLAGS_DISABLE_PREFIXED_ENCRYPTED_MEDIA_NAME,
IDS_FLAGS_DISABLE_PREFIXED_ENCRYPTED_MEDIA_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kDisablePrefixedEncryptedMedia)
},
#if defined(OS_ANDROID)
{
"disable-infobar-for-protected-media-identifier",
IDS_FLAGS_DISABLE_INFOBAR_FOR_PROTECTED_MEDIA_IDENTIFIER_NAME,
IDS_FLAGS_DISABLE_INFOBAR_FOR_PROTECTED_MEDIA_IDENTIFIER_DESCRIPTION,
kOsAndroid,
SINGLE_VALUE_TYPE(switches::kDisableInfobarForProtectedMediaIdentifier)
},
{
"mediadrm-enable-non-compositing",
IDS_FLAGS_MEDIADRM_ENABLE_NON_COMPOSITING_NAME,
IDS_FLAGS_MEDIADRM_ENABLE_NON_COMPOSITING_DESCRIPTION,
kOsAndroid,
SINGLE_VALUE_TYPE(switches::kMediaDrmEnableNonCompositing)
},
#endif // defined(OS_ANDROID)
{
"enable-javascript-harmony",
IDS_FLAGS_ENABLE_JAVASCRIPT_HARMONY_NAME,
IDS_FLAGS_ENABLE_JAVASCRIPT_HARMONY_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE_AND_VALUE(switches::kJavaScriptFlags, "--harmony")
},
{
"disable-software-rasterizer",
IDS_FLAGS_DISABLE_SOFTWARE_RASTERIZER_NAME,
IDS_FLAGS_DISABLE_SOFTWARE_RASTERIZER_DESCRIPTION,
#if defined(ENABLE_SWIFTSHADER)
kOsAll,
#else
0,
#endif
SINGLE_VALUE_TYPE(switches::kDisableSoftwareRasterizer)
},
{
"enable-gpu-rasterization",
IDS_FLAGS_ENABLE_GPU_RASTERIZATION_NAME,
IDS_FLAGS_ENABLE_GPU_RASTERIZATION_DESCRIPTION,
kOsAndroid,
MULTI_VALUE_TYPE(kEnableGpuRasterizationChoices)
},
{
"enable-experimental-web-platform-features",
IDS_FLAGS_EXPERIMENTAL_WEB_PLATFORM_FEATURES_NAME,
IDS_FLAGS_EXPERIMENTAL_WEB_PLATFORM_FEATURES_DESCRIPTION,
kOsAll,
SINGLE_VALUE_TYPE(switches::kEnableExperimentalWebPlatformFeatures)
},
{
"disable-ntp-other-sessions-menu",
IDS_FLAGS_NTP_OTHER_SESSIONS_MENU_NAME,
IDS_FLAGS_NTP_OTHER_SESSIONS_MENU_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kDisableNTPOtherSessionsMenu)
},
{
"enable-devtools-experiments",
IDS_FLAGS_ENABLE_DEVTOOLS_EXPERIMENTS_NAME,
IDS_FLAGS_ENABLE_DEVTOOLS_EXPERIMENTS_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kEnableDevToolsExperiments)
},
{
"silent-debugger-extension-api",
IDS_FLAGS_SILENT_DEBUGGER_EXTENSION_API_NAME,
IDS_FLAGS_SILENT_DEBUGGER_EXTENSION_API_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kSilentDebuggerExtensionAPI)
},
{
"spellcheck-autocorrect",
IDS_FLAGS_SPELLCHECK_AUTOCORRECT,
IDS_FLAGS_SPELLCHECK_AUTOCORRECT_DESCRIPTION,
kOsWin | kOsLinux | kOsCrOS,
SINGLE_VALUE_TYPE(switches::kEnableSpellingAutoCorrect)
},
{
"enable-scroll-prediction",
IDS_FLAGS_ENABLE_SCROLL_PREDICTION_NAME,
IDS_FLAGS_ENABLE_SCROLL_PREDICTION_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kEnableScrollPrediction)
},
{
"touch-events",
IDS_TOUCH_EVENTS_NAME,
IDS_TOUCH_EVENTS_DESCRIPTION,
kOsDesktop,
MULTI_VALUE_TYPE(kTouchEventsChoices)
},
{
"touch-optimized-ui",
IDS_FLAGS_TOUCH_OPTIMIZED_UI_NAME,
IDS_FLAGS_TOUCH_OPTIMIZED_UI_DESCRIPTION,
kOsWin,
MULTI_VALUE_TYPE(kTouchOptimizedUIChoices)
},
{
"disable-touch-adjustment",
IDS_DISABLE_TOUCH_ADJUSTMENT_NAME,
IDS_DISABLE_TOUCH_ADJUSTMENT_DESCRIPTION,
kOsWin | kOsLinux | kOsCrOS,
SINGLE_VALUE_TYPE(switches::kDisableTouchAdjustment)
},
#if defined(OS_CHROMEOS)
{
"ash-use-alternate-shelf",
IDS_FLAGS_ALTERNATE_SHELF_LAYOUT_NAME,
IDS_FLAGS_ALTERNATE_SHELF_LAYOUT_DESCRIPTION,
kOsCrOS,
ENABLE_DISABLE_VALUE_TYPE(ash::switches::kAshUseAlternateShelfLayout,
ash::switches::kAshDisableAlternateShelfLayout)
},
{
"ash-disable-docked-windows",
IDS_FLAGS_DOCKED_WINDOWS_NAME,
IDS_FLAGS_DOCKED_WINDOWS_DESCRIPTION,
kOsCrOS,
SINGLE_VALUE_TYPE(ash::switches::kAshDisableDockedWindows)
},
{
"network-portal-notification",
IDS_FLAGS_NETWORK_PORTAL_NOTIFICATION_NAME,
IDS_FLAGS_NETWORK_PORTAL_NOTIFICATION_DESCRIPTION,
kOsCrOS,
ENABLE_DISABLE_VALUE_TYPE(
chromeos::switches::kEnableNetworkPortalNotification,
chromeos::switches::kDisableNetworkPortalNotification)
},
#endif
{
"enable-download-resumption",
IDS_FLAGS_ENABLE_DOWNLOAD_RESUMPTION_NAME,
IDS_FLAGS_ENABLE_DOWNLOAD_RESUMPTION_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE(switches::kEnableDownloadResumption)
},
{
"allow-nacl-socket-api",
IDS_FLAGS_ALLOW_NACL_SOCKET_API_NAME,
IDS_FLAGS_ALLOW_NACL_SOCKET_API_DESCRIPTION,
kOsDesktop,
SINGLE_VALUE_TYPE_AND_VALUE(switches::kAllowNaClSocketAPI, "*")
},
{
"stacked-tab-strip",
IDS_FLAGS_STACKED_TAB_STRIP_NAME,
IDS_FLAGS_STACKED_TAB_STRIP_DESCRIPTION,
kOsWin,
SINGLE_VALUE_TYPE(switches::kEnableStackedTabStrip)
},
{
"force-device-scale-factor",
IDS_FLAGS_FORCE_HIGH_DPI_NAME,
IDS_FLAGS_FORCE_HIGH_DPI_DESCRIPTION,
kOsCrOS,
SINGLE_VALUE_TYPE_AND_VALUE(switches::kForceDeviceScaleFactor, "2")
},