Final batch adding real histogram values for extension events.

chrome/browser/extensions/api/font_settings/font_settings_api.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.
 
 // Defines the classes to realize the Font Settings Extension API as specified
 // in the extension API JSON.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_FONT_SETTINGS_FONT_SETTINGS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_FONT_SETTINGS_FONT_SETTINGS_API_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/event_router.h"
+#include "extensions/browser/extension_event_histogram_value.h"
 
 class Profile;
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 // This class observes pref changed events on a profile and dispatches the
 // corresponding extension API events to extensions.
 class FontSettingsEventRouter {
  public:
   // Constructor for observing pref changed events on |profile|. Stores a
   // pointer to |profile| but does not take ownership. |profile| must be
   // non-NULL and remain alive for the lifetime of the instance.
   explicit FontSettingsEventRouter(Profile* profile);
   virtual ~FontSettingsEventRouter();
 
  private:
   // Observes browser pref |pref_name|. When a change is observed, dispatches
   // event |event_name| to extensions. A JavaScript object is passed to the
   // extension event function with the new value of the pref in property |key|.
   void AddPrefToObserve(const char* pref_name,
+                        events::HistogramValue histogram_value,
                         const char* event_name,
                         const char* key);
 
   // Decodes a preference change for a font family map and invokes
   // OnFontNamePrefChange with the right parameters.
   void OnFontFamilyMapPrefChanged(const std::string& pref_name);
 
   // Dispatches a changed event for the font setting for |generic_family| and
   // |script| to extensions. The new value of the setting is the value of
   // browser pref |pref_name|.
   void OnFontNamePrefChanged(const std::string& pref_name,
                              const std::string& generic_family,
                              const std::string& script);
 
   // Dispatches the setting changed event |event_name| to extensions. The new
   // value of the setting is the value of browser pref |pref_name|. This value
   // is passed in the JavaScript object argument to the extension event function
   // under the key |key|.
-  void OnFontPrefChanged(const std::string& event_name,
+  void OnFontPrefChanged(events::HistogramValue histogram_value,
+                         const std::string& event_name,
                          const std::string& key,
                          const std::string& pref_name);
 
   // Manages pref observation registration.
   PrefChangeRegistrar registrar_;
 
   // Weak, owns us (transitively via ExtensionService).
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(FontSettingsEventRouter);
@@ skipping 246 matching lines @@
   ~FontSettingsSetMinimumFontSizeFunction() override {}
 
   // SetFontPrefExtensionFunction:
   const char* GetPrefName() override;
   const char* GetKey() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_FONT_SETTINGS_FONT_SETTINGS_API_H_