Remove duplicated headers from the testing/ directory

Source/testing/runner/NotificationPresenter.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "NotificationPresenter.h"
 
 #include "public/platform/Platform.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebURL.h"
 #include "public/testing/WebTestDelegate.h"
 #include "public/web/WebKit.h"
-#include "public/web/WebNotification.h"
 #include "public/web/WebNotificationPermissionCallback.h"
 #include "public/web/WebSecurityOrigin.h"
 #include <url/gurl.h>
 
 using namespace blink;
 using namespace std;
 
 namespace WebTestRunner {
 
 namespace {
@@ skipping 110 matching lines @@
 
 void NotificationPresenter::requestPermission(
     const WebSecurityOrigin& origin,
     WebNotificationPermissionCallback* callback)
 {
     m_delegate->printMessage("DESKTOP NOTIFICATION PERMISSION REQUESTED: " + string(origin.toString().utf8()) + "\n");
     callback->permissionRequestComplete();
 }
 
 }