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

media/filters/ffmpeg_demuxer_unittest.cc

 // 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 <algorithm>
 #include <deque>
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 381 matching lines @@
   InitializeDemuxer();
 
   // Attempt a read from the audio stream and run the message loop until done.
   DemuxerStream* audio = demuxer_->GetStream(DemuxerStream::AUDIO);
 
   audio->Read(NewReadCB(FROM_HERE, 29, 0, true));
   message_loop_.Run();
 
   audio->Read(NewReadCB(FROM_HERE, 27, 3000, true));
   message_loop_.Run();
+
+  EXPECT_EQ(22084, demuxer_->GetMemoryUsage());
 }
 
 TEST_F(FFmpegDemuxerTest, Read_Video) {
   // We test that on a successful video packet read.
   CreateDemuxer("bear-320x240.webm");
   InitializeDemuxer();
 
   // Attempt a read from the video stream and run the message loop until done.
   DemuxerStream* video = demuxer_->GetStream(DemuxerStream::VIDEO);
 
   video->Read(NewReadCB(FROM_HERE, 22084, 0, true));
   message_loop_.Run();
 
   video->Read(NewReadCB(FROM_HERE, 1057, 33000, false));
   message_loop_.Run();
+
+  EXPECT_EQ(323, demuxer_->GetMemoryUsage());
 }
 
 TEST_F(FFmpegDemuxerTest, Read_Text) {
   // We test that on a successful text packet read.
   CreateDemuxer("bear-vp8-webvtt.webm");
   DemuxerStream* text_stream = NULL;
   EXPECT_CALL(host_, AddTextStream(_, _))
       .WillOnce(SaveArg<0>(&text_stream));
   InitializeDemuxerText(true);
   ASSERT_TRUE(text_stream);
@@ skipping 691 matching lines @@
 
   video->Read(NewReadCB(FROM_HERE, 3569, 66733, true));
   message_loop_.Run();
 
   video->Read(NewReadCB(FROM_HERE, 1042, 200200, false));
   message_loop_.Run();
 }
 #endif
 
 }  // namespace media