Make ExtensionService use ExtensionSet.

chrome/browser/extensions/extension_preference_api.cc

 // Copyright (c) 2011 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/extensions/extension_preference_api.h"
 
 #include <map>
 
 #include "base/json/json_writer.h"
 #include "base/memory/singleton.h"
@@ skipping 291 matching lines @@
   dict->Set(kValue, transformer->BrowserToExtensionPref(pref->GetValue()));
   if (incognito) {
     ExtensionPrefs* ep = extension_service->extension_prefs();
     dict->SetBoolean(kIncognitoSpecific,
                      ep->HasIncognitoPrefValue(browser_pref));
   }
 
   ExtensionEventRouter* router = profile_->GetExtensionEventRouter();
   if (!router || !router->HasEventListener(event_name))
     return;
-  const ExtensionList* extensions = extension_service->extensions();
-  for (ExtensionList::const_iterator it = extensions->begin();
+  const ExtensionSet* extensions = extension_service->extensions();
+  for (ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end(); ++it) {
     std::string extension_id = (*it)->id();
     // TODO(bauerb): Only iterate over registered event listeners.
     if (router->ExtensionHasEventListener(extension_id, event_name) &&
         (*it)->HasAPIPermission(permission) &&
         (!incognito || extension_service->CanCrossIncognito(*it))) {
       std::string level_of_control =
           GetLevelOfControl(profile_, extension_id, browser_pref, incognito);
       dict->SetString(kLevelOfControl, level_of_control);
 
@@ skipping 180 matching lines @@
           pref_key, &browser_pref, &permission));
   if (!GetExtension()->HasAPIPermission(permission)) {
     error_ = ExtensionErrorUtils::FormatErrorMessage(
         keys::kPermissionErrorMessage, pref_key);
     return false;
   }
   ExtensionPrefs* prefs = profile_->GetExtensionService()->extension_prefs();
   prefs->RemoveExtensionControlledPref(extension_id(), browser_pref, scope);
   return true;
 }