Battery Status API: add testing support for LayoutTests.

content/renderer/renderer_webkitplatformsupport_impl.h

Index: content/renderer/renderer_webkitplatformsupport_impl.h
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.h b/content/renderer/renderer_webkitplatformsupport_impl.h
index a91ffefbc9767d2f999f2906bd104a0a17007a07..509db776ed70e08803ad7ae305f12dccc2cf91a3 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.h
+++ b/content/renderer/renderer_webkitplatformsupport_impl.h
@@ -28,6 +28,7 @@ class SyncMessageFilter;
 }
 
 namespace blink {
+class WebBatteryStatus;
 class WebDeviceMotionData;
 class WebDeviceOrientationData;
 class WebGraphicsContext3DProvider;
@@ -185,6 +186,9 @@ class CONTENT_EXPORT RendererWebKitPlatformSupportImpl
   // Resets the mock screen orientation data used for testing.
   static void ResetMockScreenOrientationForTesting();
 
+  // Notifies blink::WebBatteryStatusListener that battery status has changed.
+  static void MockBatteryStatusChanged(const blink::WebBatteryStatus& status);
+
   WebDatabaseObserverImpl* web_database_observer_impl() {
     return web_database_observer_impl_.get();
   }