Add support to Battery Status API in blink.

Source/modules/battery/NavigatorBattery.idl

Index: Source/modules/battery/NavigatorBattery.idl
diff --git a/Source/modules/vibration/NavigatorVibration.idl b/Source/modules/battery/NavigatorBattery.idl
similarity index 78%
copy from Source/modules/vibration/NavigatorVibration.idl
copy to Source/modules/battery/NavigatorBattery.idl
index 2c2c140706f3fd4ea5ab31a9824ce1fc22550e07..d62006327ff2013f7cf606c7d0e880db2b23412e 100644
--- a/Source/modules/vibration/NavigatorVibration.idl
+++ b/Source/modules/battery/NavigatorBattery.idl
@@ -1,5 +1,6 @@
 /*
  *  Copyright (C) 2012 Samsung Electronics
+ *  Copyright (C) 2014 Intel Corporation 
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
@@ -17,9 +18,8 @@
  *  Boston, MA 02110-1301, USA.
  */
 
+
 partial interface Navigator {
-    // FIXME: The contents of the pattern argument should be clamped.
-    // See https://code.google.com/p/chromium/issues/detail?id=310138
-    boolean vibrate(sequence<unsigned long> pattern);
-    boolean vibrate([Clamp] unsigned long time);
+    readonly attribute BatteryManager battery;
 };
+