Add Vibration API layout tests that inspect internal state.

Source/modules/vibration/NavigatorVibration.h

Index: Source/modules/vibration/NavigatorVibration.h
diff --git a/Source/modules/vibration/NavigatorVibration.h b/Source/modules/vibration/NavigatorVibration.h
index 32b21ad7fd18a863ebca47ead51d2e44701b18ff..8058077a63ed76f134e4b9478dcced1f9a4d4b7a 100644
--- a/Source/modules/vibration/NavigatorVibration.h
+++ b/Source/modules/vibration/NavigatorVibration.h
@@ -53,6 +53,7 @@ public:
     static NavigatorVibration* from(Page*);
 
     bool isVibrating() const { return m_isVibrating; }
+    VibrationPattern getPattern() const { return m_pattern; }

[Peter Beverloo, 2013/10/24 17:46:59]

Blink style doesn't use the "get" prefix for getters.  pattern() would work fine
here, for the internals API maybe internals.pendingVibrationPattern() would
work?

nit: very maybe an empty line above here, since methods seem to be grouped
together?

[Michael van Ouwerkerk, 2013/10/25 10:26:39]

Done.

 
 private:
     explicit NavigatorVibration(Page*);