Move ExtensionWarningService and ExtensionsWarningSet to extensions.

extensions/browser/mock_extension_system.cc

 // Copyright 2014 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 "extensions/browser/mock_extension_system.h"
 
 #include "extensions/common/extension_set.h"
 
 namespace extensions {
 
@@ skipping 44 matching lines @@
 }
 
 LazyBackgroundTaskQueue* MockExtensionSystem::lazy_background_task_queue() {
   return NULL;
 }
 
 EventRouter* MockExtensionSystem::event_router() {
   return NULL;
 }
 
-ExtensionWarningService* MockExtensionSystem::warning_service() {
+WarningService* MockExtensionSystem::warning_service() {
   return NULL;
 }
 
 Blacklist* MockExtensionSystem::blacklist() {
   return NULL;
 }
 
 ErrorConsole* MockExtensionSystem::error_console() {
   return NULL;
 }
@@ skipping 19 matching lines @@
           const ExtensionId& extension_id) {
   return NULL;
 }
 
 scoped_ptr<ExtensionSet> MockExtensionSystem::GetDependentExtensions(
     const Extension* extension) {
   return scoped_ptr<ExtensionSet>();
 }
 
 }  // namespace extensions