AudioRendererSinKCache: Do not use unhealthy sinks

content/renderer/media/audio_renderer_sink_cache_impl.h

 // Copyright 2016 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_SINK_CACHE_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_SINK_CACHE_IMPL_H_
 
 #include "content/renderer/media/audio_renderer_sink_cache.h"
 
 #include <vector>
@@ skipping 52 matching lines @@
   // sink is deleted only if unused.
   void DeleteSink(const media::AudioRendererSink* sink_ptr,
                   bool force_delete_used);
 
   CacheContainer::iterator FindCacheEntry_Locked(
       int source_render_frame_id,
       const std::string& device_id,
       const url::Origin& security_origin,
       bool unused_only);
 
+  void CacheUnusedSinkIfHealthy(int source_render_frame_id,
+                                const std::string& device_id,
+                                const url::Origin& security_origin,
+                                scoped_refptr<media::AudioRendererSink> sink);
+
   // To avoid publishing CacheEntry structure in the header.
   int GetCacheSizeForTesting();
 
   // Task runner for scheduled sink garbage collection.
   const scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   // Callback used for sink creation.
   const CreateSinkCallback create_sink_cb_;
 
   // Cached sink deletion timeout.
@@ skipping 18 matching lines @@
 
   // Used to produce |weak_this_| on AudioRendererSinkCacheImpl construction.
   base::WeakPtrFactory<AudioRendererSinkCacheImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererSinkCacheImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_SINK_CACHE_IMPL_H_