Vibration cannot be canceled during pattern vibration.

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index 47c1dadc57fcefb9cafc053d5f267abbc9760ffe..6a18af252020abd40832a28c1488f5f565cff28e 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -101,6 +101,7 @@
 #include "core/rendering/RenderTreeAsText.h"
 #include "core/rendering/RenderView.h"
 #include "core/workers/WorkerThread.h"
+#include "modules/vibration/NavigatorVibration.h"

[abarth-chromium, 2013/07/08 21:04:59]

Technically this is a bad dependency.  You should be able to compile Core
without any of the modules.  The right thing to do is to make it possible for
modules to implement their own extensions to Internals.  That should be
relatively easy, but will require a little bit of GYP work.

[haraken, 2013/07/12 09:21:42]

The right solution would be to add modules/vibration/InternalsVibration.idl (a
partial interface for Internals.idl) and add isVibrating() to the IDL file.

However, currently partial interfaces won't work for Internals' IDL files
because Internals' IDL files are treated differently from other IDL files in the
IDL compiler. Would you file a bug about the issue and discuss with nbarth@ ?

At this point, it might make sense to land your CL first with a FIXME about it.

[kihong, 2013/07/17 02:19:16]

I added FIXME here and nbarth@ going to implement about this soon.
After landing his patch, I will modify test cases for vibration.

 #include "weborigin/SchemeRegistry.h"
 #include "wtf/dtoa.h"
 #include "wtf/text/StringBuffer.h"
@@ -1993,4 +1994,12 @@ bool Internals::isSelectPopupVisible(Node* node)
     return menuList->popupIsVisible();
 }
 
+bool Internals::isVibrating()
+{
+    Document* document = contextDocument();

[abarth-chromium, 2013/07/08 21:04:59]

It's better to pass in |document| explicitly.

[kihong, 2013/07/12 11:04:13]

Done.

+    ASSERT(document && document->domWindow());
+
+    return NavigatorVibration::from(document->domWindow()->navigator())->isVibrating();
+}
+
 }