chromeos: Add support for the battery status API on chromeos.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index cacdcb23b872a724e60b4f614cb88b3fedaedd92..e2e44dc17668b47023b03d9e9a97e15602ae9a00 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -59,6 +59,7 @@
 #pragma warning(disable: 4250)
 #endif
 
+class BatteryStatusDispatcher;
 class CommandLine;
 class DeviceOrientationDispatcher;
 class DevToolsAgent;
@@ -425,6 +426,7 @@ class RenderViewImpl : public RenderWidget,
   virtual WebKit::WebSpeechInputController* speechInputController(
       WebKit::WebSpeechInputListener* listener);
   virtual WebKit::WebDeviceOrientationClient* deviceOrientationClient();
+  virtual WebKit::WebBatteryStatusClient* batteryStatusClient();
   virtual void zoomLimitsChanged(double minimum_level, double maximum_level);
   virtual void zoomLevelChanged();
   virtual void registerProtocolHandler(const WebKit::WebString& scheme,
@@ -1212,6 +1214,9 @@ class RenderViewImpl : public RenderWidget,
   // Device orientation dispatcher attached to this view; lazily initialized.
   DeviceOrientationDispatcher* device_orientation_dispatcher_;
 
+  // Battery status dispatcher attached to this view; lazily initialized.
+  BatteryStatusDispatcher* battery_status_dispatcher_;
+
   // MediaStream dispatcher attached to this view; lazily initialized.
   MediaStreamDispatcher* media_stream_dispatcher_;