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

media/blink/buffered_resource_loader_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 <algorithm>
 #include <string>
 
 #include "base/bind.h"
 #include "base/format_macros.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 242 matching lines @@
   }
 
   void ConfirmBufferState(int backward_bytes,
                           int backward_capacity,
                           int forward_bytes,
                           int forward_capacity) {
     EXPECT_EQ(backward_bytes, loader_->buffer_.backward_bytes());
     EXPECT_EQ(backward_capacity, loader_->buffer_.backward_capacity());
     EXPECT_EQ(forward_bytes, loader_->buffer_.forward_bytes());
     EXPECT_EQ(forward_capacity, loader_->buffer_.forward_capacity());
+    EXPECT_EQ(backward_bytes + forward_bytes, loader_->GetMemoryUsage());
   }
 
   void ConfirmLoaderBufferBackwardCapacity(int expected_backward_capacity) {
     EXPECT_EQ(loader_->buffer_.backward_capacity(),
               expected_backward_capacity);
   }
 
   void ConfirmLoaderBufferForwardCapacity(int expected_forward_capacity) {
     EXPECT_EQ(loader_->buffer_.forward_capacity(), expected_forward_capacity);
   }
@@ skipping 879 matching lines @@
 
   // As soon as we have received enough data to fulfill the read, defer.
   EXPECT_CALL(*this, LoadingCallback(BufferedResourceLoader::kLoadingDeferred));
   EXPECT_CALL(*this, ReadCallback(BufferedResourceLoader::kOk, 10));
   WriteLoader(19, 1);
   VerifyBuffer(buffer, 10, 10);
   EXPECT_FALSE(HasActiveLoader());
 }
 
 }  // namespace media