Bug 1851693 - Vendor libwebrtc from aa6c910f47

Upstream commit: https://webrtc.googlesource.com/src/+/aa6c910f476ddcf48471e268276412265869732f
    [116] Set surrogate receive times for transformed sender frames

    Without this, 'Sender' frames inserted into the writer of an encoded
    transform have an invalid receive time (0), which breaks all later
    heuristics which build on the receive time, eg the VCMTiming estimators
    used for controlling the playback delay.

    (cherry picked from commit 9d677f4cdcd536a2beb9f195b93e0d3df1cd6c9c)

    Bug: chromium:1463451
    Change-Id: I413c884e08986148d4a854cd275212b21d093ceb
    Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/311544
    Reviewed-by: Guido Urdaneta <guidou@webrtc.org>
    Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
    Reviewed-by: Palak Agarwal <agpalak@google.com>
    Reviewed-by: Erik Språng <sprang@webrtc.org>
    Commit-Queue: Tony Herre <herre@google.com>
    Cr-Original-Commit-Position: refs/heads/main@{#40416}
    Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/311662
    Commit-Queue: Erik Språng <sprang@webrtc.org>
    Cr-Commit-Position: refs/branch-heads/5845@{#4}
    Cr-Branched-From: f80cf814353d11a9f22bef5ce5e8868f2c72f0d0-refs/heads/main@{#40319}

third_party/libwebrtc/README.moz-ff-commit

@@ -24648,3 +24648,6 @@ ebf9a1faf8
 # MOZ_LIBWEBRTC_SRC=/Users/mfroman/no_tm_backup/elm/.moz-fast-forward/moz-libwebrtc MOZ_LIBWEBRTC_BRANCH=mozpatches bash dom/media/webrtc/third_party_build/fast-forward-libwebrtc.sh
 # base of lastest vendoring
 04ee24493d
+# MOZ_LIBWEBRTC_SRC=/Users/mfroman/no_tm_backup/elm/.moz-fast-forward/moz-libwebrtc MOZ_LIBWEBRTC_BRANCH=mozpatches bash dom/media/webrtc/third_party_build/fast-forward-libwebrtc.sh
+# base of lastest vendoring
+aa6c910f47

third_party/libwebrtc/README.mozilla

@@ -16454,3 +16454,5 @@ libwebrtc updated from /Users/danielbaker/elm/.moz-fast-forward/moz-libwebrtc co
 libwebrtc updated from /Users/danielbaker/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2023-09-19T21:48:11.371232.
 # ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /Users/mfroman/no_tm_backup/elm/.moz-fast-forward/moz-libwebrtc --commit mozpatches libwebrtc
 libwebrtc updated from /Users/mfroman/no_tm_backup/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2023-09-27T04:05:13.829503.
+# ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /Users/mfroman/no_tm_backup/elm/.moz-fast-forward/moz-libwebrtc --commit mozpatches libwebrtc
+libwebrtc updated from /Users/mfroman/no_tm_backup/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2023-09-27T04:07:37.648411.

third_party/libwebrtc/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc

@@ -83,12 +83,14 @@ class TransformableVideoReceiverFrame
 RtpVideoStreamReceiverFrameTransformerDelegate::
     RtpVideoStreamReceiverFrameTransformerDelegate(
         RtpVideoFrameReceiver* receiver,
+        Clock* clock,
         rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
         TaskQueueBase* network_thread, uint32_t ssrc)
     : receiver_(receiver),
       frame_transformer_(std::move(frame_transformer)),
       network_thread_(network_thread),
-      ssrc_(ssrc) {}
+      ssrc_(ssrc),
+      clock_(clock) {}
 
 void RtpVideoStreamReceiverFrameTransformerDelegate::Init() {
   RTC_DCHECK_RUN_ON(&network_sequence_checker_);
@@ -163,13 +165,14 @@ void RtpVideoStreamReceiverFrameTransformerDelegate::ManageFrame(
     RTPVideoHeader video_header = RTPVideoHeader::FromMetadata(metadata);
     VideoSendTiming timing;
     rtc::ArrayView<const uint8_t> data = transformed_frame->GetData();
+    int64_t receive_time = clock_->CurrentTime().ms();
     receiver_->ManageFrame(std::make_unique<RtpFrameObject>(
         /*first_seq_num=*/metadata.GetFrameId().value_or(0),
         /*last_seq_num=*/metadata.GetFrameId().value_or(0),
         /*markerBit=*/video_header.is_last_frame_in_picture,
         /*times_nacked=*/0,
-        /*first_packet_received_time=*/0,
-        /*last_packet_received_time=*/0,
+        /*first_packet_received_time=*/receive_time,
+        /*last_packet_received_time=*/receive_time,
         /*rtp_timestamp=*/transformed_frame->GetTimestamp(),
         /*ntp_time_ms=*/0, timing, transformed_frame->GetPayloadType(),
         metadata.GetCodec(), metadata.GetRotation(), metadata.GetContentType(),

third_party/libwebrtc/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.h

@@ -18,6 +18,7 @@
 #include "modules/rtp_rtcp/source/frame_object.h"
 #include "rtc_base/system/no_unique_address.h"
 #include "rtc_base/thread.h"
+#include "system_wrappers/include/clock.h"
 
 namespace webrtc {
 
@@ -38,6 +39,7 @@ class RtpVideoStreamReceiverFrameTransformerDelegate
  public:
   RtpVideoStreamReceiverFrameTransformerDelegate(
       RtpVideoFrameReceiver* receiver,
+      Clock* clock,
       rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
       TaskQueueBase* network_thread, uint32_t ssrc);
 
@@ -66,6 +68,7 @@ class RtpVideoStreamReceiverFrameTransformerDelegate
       RTC_GUARDED_BY(network_sequence_checker_);
   TaskQueueBase* const network_thread_;
   const uint32_t ssrc_;
+  Clock* const clock_;
 };
 
 }  // namespace webrtc

third_party/libwebrtc/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate_unittest.cc

@@ -72,9 +72,10 @@ TEST(RtpVideoStreamReceiverFrameTransformerDelegateTest,
      RegisterTransformedFrameCallbackSinkOnInit) {
   TestRtpVideoFrameReceiver receiver;
   auto frame_transformer(rtc::make_ref_counted<MockFrameTransformer>());
+  SimulatedClock clock(0);
   auto delegate(
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          &receiver, frame_transformer, rtc::Thread::Current(),
+          &receiver, &clock, frame_transformer, rtc::Thread::Current(),
           /*remote_ssrc*/ 1111));
   EXPECT_CALL(*frame_transformer,
               RegisterTransformedFrameSinkCallback(testing::_, 1111));
@@ -85,9 +86,10 @@ TEST(RtpVideoStreamReceiverFrameTransformerDelegateTest,
      UnregisterTransformedFrameSinkCallbackOnReset) {
   TestRtpVideoFrameReceiver receiver;
   auto frame_transformer(rtc::make_ref_counted<MockFrameTransformer>());
+  SimulatedClock clock(0);
   auto delegate(
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          &receiver, frame_transformer, rtc::Thread::Current(),
+          &receiver, &clock, frame_transformer, rtc::Thread::Current(),
           /*remote_ssrc*/ 1111));
   EXPECT_CALL(*frame_transformer, UnregisterTransformedFrameSinkCallback(1111));
   delegate->Reset();
@@ -97,9 +99,10 @@ TEST(RtpVideoStreamReceiverFrameTransformerDelegateTest, TransformFrame) {
   TestRtpVideoFrameReceiver receiver;
   auto frame_transformer(
       rtc::make_ref_counted<testing::NiceMock<MockFrameTransformer>>());
+  SimulatedClock clock(0);
   auto delegate(
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          &receiver, frame_transformer, rtc::Thread::Current(),
+          &receiver, &clock, frame_transformer, rtc::Thread::Current(),
           /*remote_ssrc*/ 1111));
   auto frame = CreateRtpFrameObject();
   EXPECT_CALL(*frame_transformer, Transform);
@@ -112,10 +115,11 @@ TEST(RtpVideoStreamReceiverFrameTransformerDelegateTest,
   TestRtpVideoFrameReceiver receiver;
   auto mock_frame_transformer(
       rtc::make_ref_counted<NiceMock<MockFrameTransformer>>());
+  SimulatedClock clock(0);
   std::vector<uint32_t> csrcs = {234, 345, 456};
   auto delegate =
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          &receiver, mock_frame_transformer, rtc::Thread::Current(),
+          &receiver, &clock, mock_frame_transformer, rtc::Thread::Current(),
           /*remote_ssrc*/ 1111);
 
   rtc::scoped_refptr<TransformedFrameCallback> callback;
@@ -144,9 +148,11 @@ TEST(RtpVideoStreamReceiverFrameTransformerDelegateTest,
   TestRtpVideoFrameReceiver receiver;
   auto mock_frame_transformer =
       rtc::make_ref_counted<NiceMock<MockFrameTransformer>>();
+  SimulatedClock clock(0);
   auto delegate =
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          &receiver, mock_frame_transformer, rtc::Thread::Current(), 1111);
+          &receiver, &clock, mock_frame_transformer, rtc::Thread::Current(),
+          1111);
   delegate->Init();
   RTPVideoHeader video_header;
   video_header.width = 1280u;
@@ -191,9 +197,10 @@ TEST(RtpVideoStreamReceiverFrameTransformerDelegateTest,
   TestRtpVideoFrameReceiver receiver;
   auto mock_frame_transformer =
       rtc::make_ref_counted<NiceMock<MockFrameTransformer>>();
+  SimulatedClock clock(/*initial_timestamp_us=*/12345000);
   auto delegate =
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          &receiver, mock_frame_transformer, rtc::Thread::Current(),
+          &receiver, &clock, mock_frame_transformer, rtc::Thread::Current(),
           /*remote_ssrc*/ 1111);
 
   auto mock_sender_frame =
@@ -218,6 +225,7 @@ TEST(RtpVideoStreamReceiverFrameTransformerDelegateTest,
   EXPECT_CALL(receiver, ManageFrame)
       .WillOnce([&](std::unique_ptr<RtpFrameObject> frame) {
         EXPECT_EQ(frame->codec_type(), metadata.GetCodec());
+        EXPECT_EQ(frame->ReceivedTime(), 12345);
       });
   callback->OnTransformedFrame(std::move(mock_sender_frame));
   rtc::ThreadManager::ProcessAllMessageQueuesForTesting();
@@ -232,17 +240,18 @@ TEST(RtpVideoStreamReceiverFrameTransformerDelegateTest,
   TestRtpVideoFrameReceiver receiver1;
   auto mock_frame_transformer1(
       rtc::make_ref_counted<NiceMock<MockFrameTransformer>>());
+  SimulatedClock clock(0);
   auto delegate1 =
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          &receiver1, mock_frame_transformer1, rtc::Thread::Current(),
+          &receiver1, &clock, mock_frame_transformer1, rtc::Thread::Current(),
           /*remote_ssrc*/ 1111);
 
   TestRtpVideoFrameReceiver receiver2;
   auto mock_frame_transformer2(
       rtc::make_ref_counted<NiceMock<MockFrameTransformer>>());
   auto delegate2 =
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          &receiver2, mock_frame_transformer2, rtc::Thread::Current(),
+          &receiver2, &clock, mock_frame_transformer2, rtc::Thread::Current(),
           /*remote_ssrc*/ 1111);
 
   delegate1->Init();

third_party/libwebrtc/moz-patch-stack/0037.patch

@@ -25,7 +25,7 @@ index 2817c9bd9a..e7489a6cdf 100644
 
        // See LntfConfig for description.
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index a01e60f8bb..91f230eab7 100644
+index aceee90313..7d7021ee85 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -296,9 +296,8 @@ RtpVideoStreamReceiver2::RtpVideoStreamReceiver2(

third_party/libwebrtc/moz-patch-stack/0045.patch

@@ -269,7 +269,7 @@ index 7b5ec77f3d..b43832b5fb 100644
      TransportFeedbackObserver* transport_feedback_callback = nullptr;
      VideoBitrateAllocationObserver* bitrate_allocation_observer = nullptr;
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index 91f230eab7..25bd997029 100644
+index 7d7021ee85..76395b568e 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -83,7 +83,8 @@ std::unique_ptr<ModuleRtpRtcpImpl2> CreateRtpRtcpModule(

third_party/libwebrtc/moz-patch-stack/0047.patch

@@ -15,7 +15,7 @@ Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/edac9d01a9ac7594f
  3 files changed, 24 insertions(+)
 
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index 25bd997029..a9e6579092 100644
+index 76395b568e..be36dc8305 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -1051,6 +1051,16 @@ absl::optional<int64_t> RtpVideoStreamReceiver2::LastReceivedKeyframePacketMs()

third_party/libwebrtc/moz-patch-stack/0053.patch

@@ -159,7 +159,7 @@ index b43832b5fb..b0a85d00c6 100644
    // Within this list, the sender-source SSRC pair is unique and per-pair the
    // ReportBlockData represents the latest Report Block that was received for
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index a9e6579092..59ecbb3ab1 100644
+index be36dc8305..72d3596f96 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -1056,9 +1056,10 @@ absl::optional<int64_t> RtpVideoStreamReceiver2::LastReceivedKeyframePacketMs()

third_party/libwebrtc/moz-patch-stack/0071.patch

@@ -215,7 +215,7 @@ index d8da3064fd..2fd89eedd0 100644
                                     int current_delay_ms,
                                     int target_delay_ms,
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index 59ecbb3ab1..dccaa3158f 100644
+index 72d3596f96..4946105caa 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -244,6 +244,7 @@ RtpVideoStreamReceiver2::RtpVideoStreamReceiver2(

third_party/libwebrtc/moz-patch-stack/0072.patch

@@ -30,7 +30,7 @@ index ae35ee9169..78b541b8f5 100644
 
  void ReceiveStatisticsProxy::OnPreDecode(VideoCodecType codec_type, int qp) {
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index dccaa3158f..b5e120b8b7 100644
+index 4946105caa..a4ba853b91 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -1207,7 +1207,9 @@ void RtpVideoStreamReceiver2::FrameDecoded(int64_t picture_id) {

third_party/libwebrtc/moz-patch-stack/0073.patch

@@ -166,7 +166,7 @@ index 78b541b8f5..98eb94786f 100644
  }
 
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index b5e120b8b7..f11e37e6b3 100644
+index a4ba853b91..9997fa25e3 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -44,6 +44,7 @@

third_party/libwebrtc/moz-patch-stack/0074.patch

@@ -9,7 +9,7 @@ Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/5b2a7894ef1cf096d
  1 file changed, 6 insertions(+)
 
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index f11e37e6b3..b6d8af8903 100644
+index 9997fa25e3..738da0758b 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -735,6 +735,12 @@ void RtpVideoStreamReceiver2::OnRtpPacket(const RtpPacketReceived& packet) {

third_party/libwebrtc/moz-patch-stack/0093.patch

@@ -15,12 +15,12 @@ Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/62e71a2f745c4b98d
  3 files changed, 4 insertions(+), 6 deletions(-)
 
 diff --git a/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc b/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc
-index aa5c8dfa28..15a8da18ca 100644
+index 1e4d0540f0..163fcbdf67 100644
 --- a/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc
 +++ b/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc
-@@ -79,8 +79,7 @@ RtpVideoStreamReceiverFrameTransformerDelegate::
-     RtpVideoStreamReceiverFrameTransformerDelegate(
+@@ -80,8 +80,7 @@ RtpVideoStreamReceiverFrameTransformerDelegate::
          RtpVideoFrameReceiver* receiver,
+         Clock* clock,
          rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
 -        rtc::Thread* network_thread,
 -        uint32_t ssrc)
@@ -29,38 +29,38 @@ index aa5c8dfa28..15a8da18ca 100644
        frame_transformer_(std::move(frame_transformer)),
        network_thread_(network_thread),
 diff --git a/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.h b/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.h
-index 3e8257f906..5adca0634c 100644
+index 62a42fdddf..20f9a5caa9 100644
 --- a/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.h
 +++ b/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.h
-@@ -39,8 +39,7 @@ class RtpVideoStreamReceiverFrameTransformerDelegate
-   RtpVideoStreamReceiverFrameTransformerDelegate(
+@@ -41,8 +41,7 @@ class RtpVideoStreamReceiverFrameTransformerDelegate
        RtpVideoFrameReceiver* receiver,
+       Clock* clock,
        rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
 -      rtc::Thread* network_thread,
 -      uint32_t ssrc);
 +      TaskQueueBase* network_thread, uint32_t ssrc);
 
    void Init();
    void Reset();
-@@ -65,7 +64,7 @@ class RtpVideoStreamReceiverFrameTransformerDelegate
+@@ -67,7 +66,7 @@ class RtpVideoStreamReceiverFrameTransformerDelegate
    RtpVideoFrameReceiver* receiver_ RTC_GUARDED_BY(network_sequence_checker_);
    rtc::scoped_refptr<FrameTransformerInterface> frame_transformer_
        RTC_GUARDED_BY(network_sequence_checker_);
 -  rtc::Thread* const network_thread_;
 +  TaskQueueBase* const network_thread_;
    const uint32_t ssrc_;
+   Clock* const clock_;
  };
-
 diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
-index b6d8af8903..e28bb302fe 100644
+index 738da0758b..6daa18ae30 100644
 --- a/video/rtp_video_stream_receiver2.cc
 +++ b/video/rtp_video_stream_receiver2.cc
 @@ -341,7 +341,7 @@ RtpVideoStreamReceiver2::RtpVideoStreamReceiver2(
    if (frame_transformer) {
      frame_transformer_delegate_ =
          rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
--            this, std::move(frame_transformer), rtc::Thread::Current(),
-+            this, std::move(frame_transformer), TaskQueueBase::Current(),
+-            this, clock_, std::move(frame_transformer), rtc::Thread::Current(),
++            this, clock_, std::move(frame_transformer), TaskQueueBase::Current(),
              config_.rtp.remote_ssrc);
      frame_transformer_delegate_->Init();
    }

third_party/libwebrtc/moz-patch-stack/0094.patch

@@ -150,7 +150,7 @@ index ac934eb332..a5bf65d073 100644
    // happen if a hardware encoder was used.
    std::unique_ptr<TaskQueueBase, TaskQueueDeleter> transformation_queue_;
 diff --git a/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc b/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc
-index 15a8da18ca..5e015a5910 100644
+index 163fcbdf67..b920efadff 100644
 --- a/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc
 +++ b/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.cc
 @@ -53,6 +53,11 @@ class TransformableVideoReceiverFrame

third_party/libwebrtc/video/rtp_video_stream_receiver2.cc

@@ -341,7 +341,7 @@ RtpVideoStreamReceiver2::RtpVideoStreamReceiver2(
   if (frame_transformer) {
     frame_transformer_delegate_ =
         rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-            this, std::move(frame_transformer), TaskQueueBase::Current(),
+            this, clock_, std::move(frame_transformer), TaskQueueBase::Current(),
             config_.rtp.remote_ssrc);
     frame_transformer_delegate_->Init();
   }
@@ -961,7 +961,7 @@ void RtpVideoStreamReceiver2::SetDepacketizerToDecoderFrameTransformer(
   RTC_DCHECK_RUN_ON(&worker_task_checker_);
   frame_transformer_delegate_ =
       rtc::make_ref_counted<RtpVideoStreamReceiverFrameTransformerDelegate>(
-          this, std::move(frame_transformer), rtc::Thread::Current(),
+          this, clock_, std::move(frame_transformer), rtc::Thread::Current(),
           config_.rtp.remote_ssrc);
   frame_transformer_delegate_->Init();
 }