Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_browser.cc

 // 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.
 
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_browser.h"
 
 #include <vector>
 
 #include "ash/launcher/launcher_model.h"
 #include "ash/shell.h"
@@ skipping 173 matching lines @@
         display_pref->GetString(path, &per_display_value)) {
       return per_display_value;
     }
   }
 
   return value;
 }
 
 // If prefs have synced and no user-set value exists at |local_path|, the value
 // from |synced_path| is copied to |local_path|.
-void MaybePropagatePrefToLocal(PrefService* pref_service,
+void MaybePropagatePrefToLocal(PrefServiceSyncable* pref_service,
                                const char* local_path,
                                const char* synced_path) {
   if (!pref_service->FindPreference(local_path)->HasUserSetting() &&
       pref_service->IsSyncing()) {
     // First time the user is using this machine, propagate from remote to
     // local.
     pref_service->SetString(local_path, pref_service->GetString(synced_path));
   }
 }
 
@@ skipping 68 matching lines @@
   profile_->GetPrefs()->RemoveObserver(this);
 }
 
 void ChromeLauncherControllerPerBrowser::Init() {
   UpdateAppLaunchersFromPref();
 
   // TODO(sky): update unit test so that this test isn't necessary.
   if (ash::Shell::HasInstance()) {
     SetShelfAutoHideBehaviorFromPrefs();
     SetShelfAlignmentFromPrefs();
-    PrefService* prefs = profile_->GetPrefs();
+    PrefServiceSyncable* prefs = profile_->GetPrefs();
     if (!prefs->FindPreference(prefs::kShelfAlignmentLocal)->HasUserSetting() ||
         !prefs->FindPreference(prefs::kShelfAutoHideBehaviorLocal)->
             HasUserSetting()) {
       // This causes OnIsSyncingChanged to be called when the value of
       // PrefService::IsSyncing() changes.
       prefs->AddObserver(this);
     }
     ash::Shell::GetInstance()->AddShellObserver(this);
   }
 }
@@ skipping 912 matching lines @@
 void ChromeLauncherControllerPerBrowser::SetAppIconLoaderForTest(
     AppIconLoader* loader) {
   app_icon_loader_.reset(loader);
 }
 
 const std::string&
 ChromeLauncherControllerPerBrowser::GetAppIdFromLauncherIdForTest(
     ash::LauncherID id) {
   return id_to_item_controller_map_[id]->app_id();
 }