Plumb audio focus support for spitzer clients.

content/renderer/media/audio_renderer_mixer_manager.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_MIXER_MANAGER_H_
 #define CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_MIXER_MANAGER_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 76 matching lines @@
   };
 
   // Custom compare operator for the AudioRendererMixerMap.  Allows reuse of
   // mixers where only irrelevant keys mismatch; e.g., effects, bits per sample.
   struct MixerKeyCompare {
     bool operator()(const MixerKey& a, const MixerKey& b) const {
       if (a.source_render_frame_id != b.source_render_frame_id)
         return a.source_render_frame_id < b.source_render_frame_id;
       if (a.params.channels() != b.params.channels())
         return a.params.channels() < b.params.channels();
+      if (a.params.effects() != b.params.effects())
+        return a.params.effects() < b.params.effects();
 
-      // Ignore effects(), bits_per_sample(), format(), and frames_per_buffer(),
-      // these parameters do not affect mixer reuse.  All AudioRendererMixer
-      // units disable FIFO, so frames_per_buffer() can be safely ignored.
+      // Ignore bits_per_sample(), format(), and frames_per_buffer(), these
+      // parameters do not affect mixer reuse.  All AudioRendererMixer units
+      // disable FIFO, so frames_per_buffer() can be safely ignored.
       if (a.params.channel_layout() != b.params.channel_layout())
         return a.params.channel_layout() < b.params.channel_layout();
 
       if (a.device_id != b.device_id)
         return a.device_id < b.device_id;
 
       return a.security_origin < b.security_origin;
     }
   };
 
@@ skipping 15 matching lines @@
   base::Lock mixers_lock_;
 
   media::AudioRendererSink* sink_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererMixerManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_MIXER_MANAGER_H_