Plugin Power Saver: Make Unthrottle metric collection more consistent

components/plugins/renderer/loadable_plugin_placeholder.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 COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
 #define COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "components/plugins/renderer/plugin_placeholder.h"
 #include "content/public/common/webplugininfo.h"
@@ skipping 26 matching lines @@
  protected:
   LoadablePluginPlaceholder(content::RenderFrame* render_frame,
                             blink::WebLocalFrame* frame,
                             const blink::WebPluginParams& params,
                             const std::string& html_data,
                             GURL placeholderDataUrl);
 
   ~LoadablePluginPlaceholder() override;
 
 #if defined(ENABLE_PLUGINS)
-  void DisablePowerSaverForInstance();
+  void DisablePowerSaverForInstance(
+      content::PluginInstanceThrottler::PowerSaverUnthrottleMethod method);
 #endif
 
   void OnLoadBlockedPlugins(const std::string& identifier);
   void OnSetIsPrerendering(bool is_prerendering);
 
   void SetMessage(const base::string16& message);
   void SetPluginInfo(const content::WebPluginInfo& plugin_info);
   const content::WebPluginInfo& GetPluginInfo() const;
   void SetIdentifier(const std::string& identifier);
   bool LoadingAllowed() const { return allow_loading_; }
@@ skipping 46 matching lines @@
   bool is_blocked_for_prerendering_;
 
   // True if the plugin load was deferred due to a Power Saver poster.
   bool is_blocked_for_power_saver_poster_;
 
   // This is independent of deferred plugin load due to a Power Saver poster.
   content::PluginPowerSaverMode power_saver_mode_;
 
   bool allow_loading_;
 
+  // True if the placeholder was replaced with the real plugin.
+  bool placeholder_was_replaced_;
+
   bool hidden_;
   bool finished_loading_;
   std::string identifier_;
 
   base::WeakPtrFactory<LoadablePluginPlaceholder> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LoadablePluginPlaceholder);
 };
 
 }  // namespace plugins
 
 #endif  // COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_