Disable Adobe Flash By Default

[amaitland]

Chrome has disabled it, we should as well (remove the enable-system-flash command line arg from CefSettings).

https://www.chromium.org/flash-roadmap#TOC-Flash-Disabled-by-Default-Target:-Chrome-76---July-2019-

It can still be enabled for a limited time.

• Remove enable-system-flash command line arg
• Add example of adding enable-system-flash
• Update https://github.com/cefsharp/CefSharp/wiki/General-Usage#adobe-flash-player-pepper-flash

[spacevoyager78]

I have a created a winforms browser for the purpose of executing many flash files that are stored locally in my web server and I use:

settings.CefCommandLineArgs.Add("ppapi-flash-path", "pepflashplayer64_32_0_0_321.dll");
settings.CefCommandLineArgs.Add("ppapi-flash-version", "32.0.0.321");
settings.CefCommandLineArgs.Add("disable-plugins-discovery", "1");

Right now in v79, flash executes without explicit permission. I plan to keep the last cefsharp version that will execute flash files. Will this still work for the time being for v81?

[amaitland]

All I can say is the command line args is going to be removed by default.

CEF is not actively supporting flash anymore so it could stop working any time. https://bitbucket.org/chromiumembedded/cef/issues/2768/allow-flash-to-play-without-user#comment-54073974

[amaitland]

Anyone interested in the status of Flash support in Chromium should check https://www.chromium.org/flash-roadmap#TOC-Upcoming-Changes periodicly.

It is possible to enable the system wide flash using.
This will probably work for the next few releases though there are no gurantees.

// Specify Global Settings and Command Line Arguments
var settings = new CefSettings();

// For a limited time you can still enable flash
// Enable System Wide Flash Installation
settings.CefCommandLineArgs.Add("enable-system-flash");

Cef.Initialize(settings);

Previously this command line arg was set by default, it was removed in d127981

This is the only change from a CefSharp point of view.

If Flash stops working for whatever reason then you will have to revert to a previous version as CEF is no longer supporting Flash.