Cleanup: Remove unneeded includes of notification_service.h in other headers....

chrome/browser/extensions/extension_messages_apitest.cc

 // Copyright (c) 2009 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_apitest.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/notification_registrar.h"
+#include "chrome/common/notification_service.h"
 #include "googleurl/src/gurl.h"
 
 namespace {
 
 class MessageSender : public NotificationObserver {
  public:
   MessageSender() {
     registrar_.Add(this, NotificationType::EXTENSION_HOST_DID_STOP_LOADING,
                    NotificationService::AllSources());
   }
@@ skipping 46 matching lines @@
 
   ASSERT_TRUE(RunExtensionTest("messaging/connect_external")) << message_;
 }
 
 // Tests that messages with event_urls are only passed to extensions with
 // appropriate permissions.
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, MessagingEventURL) {
   MessageSender sender;
   ASSERT_TRUE(RunExtensionTest("messaging/event_url")) << message_;
 }