components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/extensions/component_loader.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_COMPONENT_LOADER_H_
 #define CHROME_BROWSER_EXTENSIONS_COMPONENT_LOADER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/values.h"
 
 class ExtensionServiceInterface;
 class PrefService;
+
+namespace user_prefs {
 class PrefRegistrySyncable;
+}
 
 namespace extensions {
 
 class Extension;
 
 // For registering, loading, and unloading component extensions.
 class ComponentLoader {
  public:
   ComponentLoader(ExtensionServiceInterface* extension_service,
                   PrefService* prefs,
@@ skipping 44 matching lines @@
   // Call this during test setup to load component extensions that have
   // background pages for testing, which could otherwise interfere with tests.
   static void EnableBackgroundExtensionsForTesting();
 
   // Adds the default component extensions. If |skip_session_components|
   // the loader will skip loading component extensions that weren't supposed to
   // be loaded unless we are in signed user session (ChromeOS). For all other
   // platforms this |skip_session_components| is expected to be unset.
   void AddDefaultComponentExtensions(bool skip_session_components);
 
-  static void RegisterUserPrefs(PrefRegistrySyncable* registry);
+  static void RegisterUserPrefs(user_prefs::PrefRegistrySyncable* registry);
 
   // Parse the given JSON manifest. Returns NULL if it cannot be parsed, or if
   // if the result is not a DictionaryValue.
   DictionaryValue* ParseManifest(const std::string& manifest_contents) const;
 
   // Clear the list of registered extensions.
   void ClearAllRegistered();
 
   // Reloads a registered component extension.
   void Reload(const std::string& extension_id);
@@ skipping 44 matching lines @@
   RegisteredComponentExtensions component_extensions_;
 
   PrefChangeRegistrar pref_change_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ComponentLoader);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_COMPONENT_LOADER_H_