Vibration cannot be canceled during pattern vibration.

Source/modules/testing/InternalsVibration.cpp

 /*
- * Copyright (C) 2010 Google Inc. All rights reserved.
+ * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

[do-not-use, 2013/08/13 06:41:59]

Outdated header:
http://www.chromium.org/blink/coding-style#TOC-License

[kihong, 2013/08/13 06:57:12]

Done.

  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
+#include "InternalsVibration.h"
 
-#include "core/html/canvas/WebGLExtension.h"
+#include "core/dom/Document.h"
+#include "core/testing/Internals.h"
+#include "modules/vibration/NavigatorVibration.h"
 
 namespace WebCore {
 
-WebGLExtension::WebGLExtension(WebGLRenderingContext* context)
-    : m_context(context)
+bool InternalsVibration::isVibrating(Internals* internals, Document* document)
 {
-}
-
-WebGLExtension::~WebGLExtension()
-{
+    ASSERT(internals && document && document->page());
+    return NavigatorVibration::from(document->page())->isVibrating();
 }
 
 } // namespace WebCore