Get rid of content::NavigationController in cc file and use "using" instead.

chrome/test/base/test_html_dialog_observer.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/test/base/test_html_dialog_observer.h"
 
 #include "chrome/common/chrome_notification_types.h"
 #include "content/test/js_injection_ready_observer.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_service.h"
 #include "content/browser/webui/web_ui.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/web_contents.h"
 
+using content::NavigationController;
+
 TestHtmlDialogObserver::TestHtmlDialogObserver(
     JsInjectionReadyObserver* js_injection_ready_observer)
     : js_injection_ready_observer_(js_injection_ready_observer),
       web_ui_(NULL), done_(false), running_(false) {
   registrar_.Add(this, chrome::NOTIFICATION_HTML_DIALOG_SHOWN,
                  content::NotificationService::AllSources());
 }
 
 TestHtmlDialogObserver::~TestHtmlDialogObserver() {
 }
@@ skipping 12 matching lines @@
       registrar_.Remove(this, chrome::NOTIFICATION_HTML_DIALOG_SHOWN,
                         content::NotificationService::AllSources());
       // Wait for navigation on the new WebUI instance to complete. This depends
       // on receiving the notification of the HtmlDialog being shown before the
       // NavigationController finishes loading. The HtmlDialog notification is
       // issued from html_dialog_ui.cc on RenderView creation which results from
       // the call to render_manager_.Navigate in the method
       // TabContents::NavigateToEntry. The new RenderView is later told to
       // navigate in this method, ensuring that this is not a race condition.
       registrar_.Add(this, content::NOTIFICATION_LOAD_STOP,
-                     content::Source<content::NavigationController>(
+                     content::Source<NavigationController>(
                          &web_ui_->web_contents()->GetController()));
       break;
     case content::NOTIFICATION_LOAD_STOP:
       DCHECK(web_ui_);
       registrar_.Remove(this, content::NOTIFICATION_LOAD_STOP,
-                        content::Source<content::NavigationController>(
+                        content::Source<NavigationController>(
                             &web_ui_->web_contents()->GetController()));
       done_ = true;
       // If the message loop is running stop it.
       if (running_) {
         running_ = false;
         MessageLoopForUI::current()->Quit();
       }
       break;
     default:
       NOTREACHED();
   };
 }
 
 WebUI* TestHtmlDialogObserver::GetWebUI() {
   if (!done_) {
     EXPECT_FALSE(running_);
     running_ = true;
     ui_test_utils::RunMessageLoop();
   }
   return web_ui_;
 }