Update the Website Settings page when the power consumption is updated.

chrome/browser/ui/webui/options/website_settings_handler.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 CHROME_BROWSER_UI_WEBUI_OPTIONS_WEBSITE_SETTINGS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_WEBSITE_SETTINGS_HANDLER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/browsing_data/browsing_data_local_storage_helper.h"
 #include "chrome/browser/content_settings/content_settings_observer.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/content_settings/local_shared_objects_container.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
+#include "components/power/origin_power_map.h"
+#include "components/power/origin_power_map_observer.h"
 
 namespace options {
 
 class WebsiteSettingsHandler : public content_settings::Observer,
+                               public power::OriginPowerMapObserver,
                                public OptionsPageUIHandler {
  public:
   WebsiteSettingsHandler();
   virtual ~WebsiteSettingsHandler();
 
   typedef std::list<BrowsingDataLocalStorageHelper::LocalStorageInfo>
       LocalStorageList;
 
   // OptionsPageUIHandler implementation.
   virtual void GetLocalizedValues(
       base::DictionaryValue* localized_strings) OVERRIDE;
   virtual void InitializeHandler() OVERRIDE;
   virtual void RegisterMessages() OVERRIDE;
 
   // content_settings::Observer implementation.
   virtual void OnContentSettingChanged(
       const ContentSettingsPattern& primary_pattern,
       const ContentSettingsPattern& secondary_pattern,
       ContentSettingsType content_type,
       std::string resource_identifier) OVERRIDE;
   virtual void OnContentSettingUsed(
       const ContentSettingsPattern& primary_pattern,
       const ContentSettingsPattern& secondary_pattern,
       ContentSettingsType content_type) OVERRIDE;
 
+  // power::OriginPowerMapObserver implementation.
+  virtual void OnPowerConsumptionUpdated() OVERRIDE;
+
  private:
   // Update the page with all origins for a given content setting.
   // |args| is the string name of the content setting.
   void HandleUpdateOrigins(const base::ListValue* args);
 
   // Update the page with all origins given a filter string.
   // |args| is the filter string.
   void HandleUpdateSearchResults(const base::ListValue* args);
 
   // Update the single site edit view with the permission values for a given
@@ skipping 28 matching lines @@
   void OnLocalStorageFetched(const LocalStorageList& storage);
 
   // Get all origins with Content Settings for the last given content setting,
   // filter them by |last_filter_|, and update the page.
   void UpdateOrigins();
 
   // Get all origins with local storage usage, filter them by |last_filter_|,
   // and update the page.
   void UpdateLocalStorage();
 
+  // Get all origins with power consumption, filter them by |last_filter_|,
+  // and update the page.
+  void UpdateBatteryUsage();
+
   // Kill all tabs and app windows which have the same origin as |site_url|.
   void StopOrigin(const GURL& site_url);
 
   // Delete all of the local storage for the |site_url|.
   void DeleteLocalStorage(const GURL& site_url);
 
   // Populates the single site edit view with the permissions and local storage
   // usage for a given |site_url|. If |show_page| is true, it raises a new
   // single site edit view.
   void GetInfoForOrigin(const GURL& site_url, bool show_page);
 
   // Updates the page with the last settings used.
   void Update();
 
   // Returns the base URL for websites, or the app name for Chrome App URLs.
   const std::string& GetReadableName(const GURL& site_url);
 
   std::string last_setting_;
   std::string last_filter_;
   GURL last_site_;
   scoped_refptr<BrowsingDataLocalStorageHelper> local_storage_;
   LocalStorageList local_storage_list_;
 
   // Observer to watch for content settings changes.
   ScopedObserver<HostContentSettingsMap, content_settings::Observer> observer_;
 
+  // Observer to watch for power consumption changes.
+  ScopedObserver<power::OriginPowerMap, OriginPowerMapObserver> power_observer_;
+
   base::WeakPtrFactory<WebsiteSettingsHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebsiteSettingsHandler);
 };
 
 }  // namespace options
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_WEBSITE_SETTINGS_HANDLER_H_