Moving preference API into api/preferences

chrome/browser/extensions/api/preference/preference_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.
 
-#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFERENCE_API_H__
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFERENCE_API_H__
+#ifndef CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_PREFERENCE_API_H__
+#define CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_PREFERENCE_API_H__
 
 #include <string>
 
 #include "chrome/browser/api/prefs/pref_change_registrar.h"
 #include "chrome/browser/extensions/extension_function.h"
 #include "content/public/browser/notification_observer.h"
 
 class PrefService;
 
 namespace base {
 class Value;
 }
 
-class ExtensionPreferenceEventRouter : public content::NotificationObserver {
+namespace extensions {
+
+class PreferenceEventRouter : public content::NotificationObserver {
  public:
-  explicit ExtensionPreferenceEventRouter(Profile* profile);
-  virtual ~ExtensionPreferenceEventRouter();
+  explicit PreferenceEventRouter(Profile* profile);
+  virtual ~PreferenceEventRouter();
 
  private:
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   void OnPrefChanged(PrefService* pref_service, const std::string& pref_key);
 
   // This method dispatches events to the extension message service.
   void DispatchEvent(const std::string& extension_id,
                      const std::string& event_name,
                      const std::string& json_args);
 
   PrefChangeRegistrar registrar_;
   PrefChangeRegistrar incognito_registrar_;
 
   // Weak, owns us (transitively via ExtensionService).
   Profile* profile_;
 
-  DISALLOW_COPY_AND_ASSIGN(ExtensionPreferenceEventRouter);
+  DISALLOW_COPY_AND_ASSIGN(PreferenceEventRouter);
 };
 
 class PrefTransformerInterface {
  public:
   virtual ~PrefTransformerInterface() {}
 
   // Converts the representation of a preference as seen by the extension
   // into a representation that is used in the pref stores of the browser.
   // Returns the pref store representation in case of success or sets
   // |error| and returns NULL otherwise. |bad_message| is passed to simulate
@@ skipping 53 matching lines @@
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("types.ChromeSetting.clear")
 
  protected:
   virtual ~ClearPreferenceFunction();
 
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 };
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFERENCE_API_H__
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_PREFERENCE_API_H__