Add setBatteryListener into Platform.

public/platform/Platform.h

Index: public/platform/Platform.h
diff --git a/public/platform/Platform.h b/public/platform/Platform.h
index 5682f3b71b830bb9a438f994ec089eb7e61fdb51..c801bc7f0b419c7f6ea3d11fe66c9525539b08fe 100644
--- a/public/platform/Platform.h
+++ b/public/platform/Platform.h
@@ -36,6 +36,7 @@
 #endif
 
 #include "WebAudioDevice.h"
+#include "WebBatteryListener.h"

[timvolodine, 2014/04/23 17:32:37]

no need for include if you are forward-declaring it below.

 #include "WebCommon.h"
 #include "WebData.h"
 #include "WebGamepadListener.h"
@@ -55,6 +56,7 @@ class GrContext;
 namespace blink {
 
 class WebAudioBus;
+class WebBatteryListener;

[timvolodine, 2014/04/23 17:32:37]

could we rename this to WebBatteryStatusListener? sounds more consistent to me.

 class WebBlobRegistry;
 class WebContentDecryptionModule;
 class WebClipboard;
@@ -159,6 +161,10 @@ public:
     // creates and owns it.
     virtual WebMIDIAccessor* createMIDIAccessor(WebMIDIAccessorClient*) { return 0; }
 
+    // Battery -----------------------------------------------------------------

[timvolodine, 2014/04/23 17:32:37]

seems that other lines have length 72.. don't know why actually.

+
+    // Sets the listener for watching battery status updates.
+    virtual void setBatteryListener(blink::WebBatteryListener*) { }

[timvolodine, 2014/04/23 17:32:37]

can we rename the method to setBatteryStatusListener, I think it'd be more
consistent.

 
     // Blob ----------------------------------------------------------------