Plugin Power Saver Tiny: Add Unthrottle by Omnibox bucket to histogram.

content/public/renderer/plugin_instance_throttler.h

 // Copyright 2015 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_PUBLIC_RENDERER_PLUGIN_INSTANCE_THROTTLER_H_
 #define CONTENT_PUBLIC_RENDERER_PLUGIN_INSTANCE_THROTTLER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 36 matching lines @@
  public:
   // How the throttled power saver is unthrottled, if ever.
   // These numeric values are used in UMA logs; do not change them.
   enum PowerSaverUnthrottleMethod {
     UNTHROTTLE_METHOD_DO_NOT_RECORD = -1,  // Sentinel value to skip recording.
     UNTHROTTLE_METHOD_NEVER = 0,
     UNTHROTTLE_METHOD_BY_CLICK = 1,
     UNTHROTTLE_METHOD_BY_WHITELIST = 2,
     UNTHROTTLE_METHOD_BY_AUDIO = 3,
     UNTHROTTLE_METHOD_BY_SIZE_CHANGE = 4,
+    UNTHROTTLE_METHOD_BY_OMNIBOX_ICON = 5,
     UNTHROTTLE_METHOD_NUM_ITEMS
   };
 
   class Observer {
    public:
     // Guaranteed to be called before the throttle is engaged.
     virtual void OnKeyframeExtracted(const SkBitmap* bitmap) {}
 
     virtual void OnThrottleStateChange() {}
 
@@ skipping 34 matching lines @@
 
  protected:
   PluginInstanceThrottler() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PluginInstanceThrottler);
 };
 }
 
 #endif  // CONTENT_PUBLIC_RENDERER_PLUGIN_INSTANCE_THROTTLER_H_