Remove per-tab preference machinery.

chrome/browser/prefs/pref_service.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/prefs/pref_service.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 186 matching lines @@
           NULL,  // recommended_cloud_prefs
           default_store_.get(),
           NULL,  // pref_sync_associator
           pref_notifier),
       incognito_pref_store,
       default_store_.get(),
       NULL,
       false);
 }
 
-PrefService* PrefService::CreatePrefServiceWithPerTabPrefStore() {
-  pref_service_forked_ = true;
-  PrefNotifierImpl* pref_notifier = new PrefNotifierImpl();
-  OverlayUserPrefStore* per_tab_pref_store =
-      new OverlayUserPrefStore(user_pref_store_.get());
-  PrefsTabHelper::InitPerTabUserPrefStore(per_tab_pref_store);
-  DefaultPrefStore* default_store = new DefaultPrefStore();
-  return new PrefService(
-      pref_notifier,
-      pref_value_store_->CloneAndSpecialize(
-          NULL,  // managed_platform_prefs
-          NULL,  // managed_cloud_prefs
-          NULL,  // extension_prefs
-          NULL,  // command_line_prefs
-          per_tab_pref_store,
-          NULL,  // recommended_platform_prefs
-          NULL,  // recommended_cloud_prefs
-          default_store,
-          NULL,
-          pref_notifier),
-      per_tab_pref_store,
-      default_store,
-      NULL,
-      false);
-}
-
 PrefService::PrefService(PrefNotifierImpl* pref_notifier,
                          PrefValueStore* pref_value_store,
                          PersistentPrefStore* user_prefs,
                          DefaultPrefStore* default_store,
                          PrefModelAssociator* pref_sync_associator,
                          bool async)
     : pref_notifier_(pref_notifier),
       pref_value_store_(pref_value_store),
       user_pref_store_(user_prefs),
       default_store_(default_store),
@@ skipping 731 matching lines @@
   return pref_value_store()->PrefValueFromDefaultStore(name_.c_str());
 }
 
 bool PrefService::Preference::IsUserModifiable() const {
   return pref_value_store()->PrefValueUserModifiable(name_.c_str());
 }
 
 bool PrefService::Preference::IsExtensionModifiable() const {
   return pref_value_store()->PrefValueExtensionModifiable(name_.c_str());
 }