Let chrome_prefs handle Preferences initialization from master_preferences.

chrome/browser/profiles/profile_impl.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.
 
 // This class gathers state related to a single user profile.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_
 
 #include <string>
@@ skipping 51 matching lines @@
 
   // Ensures that the preference hash store has been initialized for the profile
   // at |profile_path|.
   static void InitializePrefHashStoreIfRequired(
       const base::FilePath& profile_path);
 
   // Resets the contents of the preference hash store for the profile at
   // |profile_path|.
   static void ResetPrefHashStore(const base::FilePath& profile_path);
 
+  // Initializes the preferences for the profile at |profile_path| with the
+  // preference values in |master_prefs|. Returns true on success.
+  static bool InitializePrefsFromMasterPrefs(
+      const base::FilePath& profile_path,
+      const base::DictionaryValue& master_prefs);
+
   // content::BrowserContext implementation:
   virtual base::FilePath GetPath() const OVERRIDE;
   virtual content::DownloadManagerDelegate*
       GetDownloadManagerDelegate() OVERRIDE;
   virtual net::URLRequestContextGetter* GetRequestContext() OVERRIDE;
   virtual net::URLRequestContextGetter* GetRequestContextForRenderProcess(
       int renderer_child_id) OVERRIDE;
   virtual net::URLRequestContextGetter* GetMediaRequestContext() OVERRIDE;
   virtual net::URLRequestContextGetter* GetMediaRequestContextForRenderProcess(
       int renderer_child_id) OVERRIDE;
@@ skipping 209 matching lines @@
   //   components/browser_context_keyed_service/browser_context_keyed_service_factory.{h,cc}
 
   Profile::Delegate* delegate_;
 
   chrome_browser_net::Predictor* predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileImpl);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_