Vibration cannot be canceled during pattern vibration.

Source/modules/testing/InternalsVibration.h

Index: Source/modules/testing/InternalsVibration.h
diff --git a/Source/core/html/canvas/WebGLExtension.cpp b/Source/modules/testing/InternalsVibration.h
similarity index 82%
copy from Source/core/html/canvas/WebGLExtension.cpp
copy to Source/modules/testing/InternalsVibration.h
index 9d3c9413c61d27f574bdd43cb3e042677d2c4bdb..e5114cd57af536f4d1e2537abe9b9dfbac74cffd 100644
--- a/Source/core/html/canvas/WebGLExtension.cpp
+++ b/Source/modules/testing/InternalsVibration.h
@@ -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
@@ -23,19 +23,19 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "config.h"
-
-#include "core/html/canvas/WebGLExtension.h"
+#ifndef InternalsVibration_h
+#define InternalsVibration_h
 
 namespace WebCore {
 
-WebGLExtension::WebGLExtension(WebGLRenderingContext* context)
-    : m_context(context)
-{
-}
+class Document;
+class Internals;
 
-WebGLExtension::~WebGLExtension()
-{
-}
+class InternalsVibration {
+public:
+    static bool isVibrating(Internals*, Document*);
+};
 
 } // namespace WebCore
+
+#endif // InternalsVibration_h