Add methods for telling V8 how much memory audio/video is using.

media/renderers/video_renderer_impl_unittest.cc

 // Copyright 2013 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 <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/debug/stack_trace.h"
@@ skipping 659 matching lines @@
   last_pipeline_statistics_.video_frames_dropped = 1;
   {
     WaitableMessageLoopEvent event;
     EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
     EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)))
         .WillOnce(RunClosure(event.GetClosure()));
     StartPlayingFrom(0);
     event.RunAndWait();
     Mock::VerifyAndClearExpectations(&mock_cb_);
     EXPECT_EQ(0u, last_pipeline_statistics_.video_frames_dropped);
+    EXPECT_EQ(460800, last_pipeline_statistics_.video_memory_usage);
   }
 
   // Consider the case that rendering is faster than we setup the test event.
   // In that case, when we run out of the frames, BUFFERING_HAVE_NOTHING will
   // be called. And then during SatisfyPendingReadWithEndOfStream,
   // BUFFER_HAVE_ENOUGH will be called again.
   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH))
       .Times(testing::AtMost(1));
   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_NOTHING))
       .Times(testing::AtMost(1));
   renderer_->OnTimeStateChanged(true);
   time_source_.StartTicking();
 
   // Suspend all future callbacks and synthetically advance the media time,
   // because this is a background render, we won't underflow by waiting until
   // a pending read is ready.
   null_video_sink_->set_background_render(true);
   AdvanceTimeInMs(91);
   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(90)));
   WaitForPendingRead();
   SatisfyPendingReadWithEndOfStream();
 
   // If this wasn't background rendering mode, this would result in two frames
   // being dropped, but since we set background render to true, none should be
   // reported
   EXPECT_EQ(0u, last_pipeline_statistics_.video_frames_dropped);
   EXPECT_EQ(4u, last_pipeline_statistics_.video_frames_decoded);
+  EXPECT_EQ(460800, last_pipeline_statistics_.video_memory_usage);
 
   AdvanceTimeInMs(30);
   WaitForEnded();
   Destroy();
 }
 
 TEST_F(VideoRendererImplTest, StartPlayingFromThenFlushThenEOS) {
   Initialize();
   QueueFrames("0 30 60 90");
 
@@ skipping 54 matching lines @@
   QueueFrames("0 10 20 30");
   StartPlayingFrom(0);
   Flush();
   ASSERT_EQ(1u, frame_ready_cbs_.size());
   // This frame will be discarded.
   frame_ready_cbs_.front().Run();
   Destroy();
 }
 
 }  // namespace media