Vibration cannot be canceled during pattern vibration.

Source/modules/testing/InternalsVibration.cpp

Index: Source/modules/testing/InternalsVibration.cpp
diff --git a/Source/core/html/canvas/WebGLExtension.cpp b/Source/modules/testing/InternalsVibration.cpp
similarity index 76%
copy from Source/core/html/canvas/WebGLExtension.cpp
copy to Source/modules/testing/InternalsVibration.cpp
index 9d3c9413c61d27f574bdd43cb3e042677d2c4bdb..23e939efe5f242f6d2892b4de8c1f7b848b69e4c 100644
--- a/Source/core/html/canvas/WebGLExtension.cpp
+++ b/Source/modules/testing/InternalsVibration.cpp
@@ -1,5 +1,5 @@
 /*
- * 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
@@ -24,18 +24,18 @@
  */
 
 #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)
-{
-}
-
-WebGLExtension::~WebGLExtension()
+bool InternalsVibration::isVibrating(Internals* internals, Document* document)
 {
+    ASSERT(internals && document && document->page());
+    return NavigatorVibration::from(document->page())->isVibrating();
 }
 
 } // namespace WebCore