Lazily prune the multibuffer block cache.

media/blink/multibuffer_data_source_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 <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 438 matching lines @@
   bool is_local_source() { return data_source_->assume_fully_buffered(); }
   void set_might_be_reused_from_cache_in_future(bool value) {
     data_source_->url_data_->set_cacheable(value);
   }
 
  protected:
   MockWebFrameClient client_;
   WebView* view_;
   WebLocalFrame* frame_;
   MultibufferDataSource::Preload preload_;
+  base::MessageLoop message_loop_;
   linked_ptr<TestUrlIndex> url_index_;
 
   scoped_ptr<MockMultibufferDataSource> data_source_;
 
   scoped_ptr<TestResponseGenerator> response_generator_;
 
   StrictMock<MockBufferedDataSourceHost> host_;
-  base::MessageLoop message_loop_;
 
   // Used for calling MultibufferDataSource::Read().
   uint8_t buffer_[kDataSize * 2];
 
   DISALLOW_COPY_AND_ASSIGN(MultibufferDataSourceTest);
 };
 
 TEST_F(MultibufferDataSourceTest, Range_Supported) {
   InitializeWith206Response();
 
@@ skipping 834 matching lines @@
   data_provider()->willFollowRedirect(url_loader(), request, response);
   Respond(response_generator_->Generate206(kDataSize));
   ReceiveData(kDataSize);
   EXPECT_CALL(host_, AddBufferedByteRange(0, kDataSize * 3));
   FinishLoading();
   EXPECT_FALSE(loading());
   Stop();
 }
 
 }  // namespace media