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

chrome/browser/extensions/extension_crash_recovery_browsertest.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 "base/process_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/notifications/balloon_host.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/notifications/notification_delegate.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/result_codes.h"
 
+using content::NavigationController;
 using content::WebContents;
 
 class ExtensionCrashRecoveryTest : public ExtensionBrowserTest {
  protected:
   ExtensionService* GetExtensionService() {
     return browser()->profile()->GetExtensionService();
   }
 
   ExtensionProcessManager* GetExtensionProcessManager() {
     return browser()->profile()->GetExtensionProcessManager();
@@ skipping 431 matching lines @@
 
   // Tab should still be open, and extension should be crashed.
   EXPECT_EQ(tabs_before, tab_strip->count());
   EXPECT_EQ(size_before, GetExtensionService()->extensions()->size());
   EXPECT_EQ(crash_size_before + 1,
             GetExtensionService()->terminated_extensions()->size());
 
   {
     ui_test_utils::WindowedNotificationObserver observer(
         content::NOTIFICATION_LOAD_STOP,
-        content::Source<content::NavigationController>(
+        content::Source<NavigationController>(
             &browser()->GetSelectedTabContentsWrapper()->web_contents()->
                 GetController()));
     browser()->Reload(CURRENT_TAB);
     observer.Wait();
   }
   // Extension should now be loaded.
   SCOPED_TRACE("after reloading the tab");
   CheckExtensionConsistency(first_extension_id_);
   ASSERT_EQ(size_before + 1, GetExtensionService()->extensions()->size());
   ASSERT_EQ(0U, CountBalloons());
 }