Plugin Power Saver: Mute throttled plugins.

content/renderer/pepper/plugin_instance_throttler_impl.h

 // Copyright 2014 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_PEPPER_PLUGIN_INSTANCE_THROTTLER_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PLUGIN_INSTANCE_THROTTLER_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
@@ skipping 37 matching lines @@
   // Called when the plugin flushes it's graphics context. Supplies the
   // throttler with a candidate to use as the representative keyframe.
   void OnImageFlush(const SkBitmap* bitmap);
 
   // Returns true if |event| was handled and shouldn't be further processed.
   bool ConsumeInputEvent(const blink::WebInputEvent& event);
 
  private:
   friend class PluginInstanceThrottlerImplTest;
 
-  enum State {
-    // Initial state if Power Saver is disabled. We are just collecting metrics.
-    POWER_SAVER_DISABLED,
-    // Initial state if Power Saver is enabled. Waiting for a keyframe.
-    POWER_SAVER_ENABLED_AWAITING_KEYFRAME,
-    // We've chosen a keyframe and the plug-in is throttled.
-    POWER_SAVER_ENABLED_PLUGIN_THROTTLED,
-    // Plugin instance is no longer considered peripheral. This can happen from
-    // a user click, whitelisting, or some other reason. We can end up in this
-    // state regardless of whether power saver is enabled.
-    PLUGIN_INSTANCE_MARKED_ESSENTIAL
-  };
-
   void EngageThrottle();
 
-  State state_;
+  PowerSaverState state_;
 
   // Number of consecutive interesting frames we've encountered.
   int consecutive_interesting_frames_;
 
   ObserverList<Observer> observer_list_;
 
   base::WeakPtrFactory<PluginInstanceThrottlerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginInstanceThrottlerImpl);
 };
 }
 
 #endif  // CONTENT_RENDERER_PEPPER_PLUGIN_INSTANCE_THROTTLER_IMPL_H_