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

content/renderer/renderer_webkitplatformsupport_impl.cc

Index: content/renderer/renderer_webkitplatformsupport_impl.cc
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.cc b/content/renderer/renderer_webkitplatformsupport_impl.cc
index 32a708655c01c73b0daf9f4ae3a617b0d896f12e..eea9169629911b1f668a982a316eedeeea79f54d 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.cc
+++ b/content/renderer/renderer_webkitplatformsupport_impl.cc
@@ -34,6 +34,7 @@
 #include "content/renderer/websharedworkerrepository_impl.h"
 #include "googleurl/src/gurl.h"
 #include "ipc/ipc_sync_message_filter.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebBatteryMonitor.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebBlobRegistry.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFileInfo.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
@@ -80,6 +81,7 @@
 #endif
 
 using WebKit::WebAudioDevice;
+using WebKit::WebBatteryMonitor;
 using WebKit::WebBlobRegistry;
 using WebKit::WebFileInfo;
 using WebKit::WebFileSystem;
@@ -725,6 +727,16 @@ RendererWebKitPlatformSupportImpl::createMediaStreamCenter(
   return render_thread->CreateMediaStreamCenter(client);
 }
 
+//------------------------------------------------------------------------------
+
+WebBatteryMonitor* RendererWebKitPlatformSupportImpl::batteryMonitor() {
+  RenderThreadImpl* render_thread = RenderThreadImpl::current();
+  DCHECK(render_thread);
+  if (!render_thread)
+    return NULL;
+  return render_thread->GetBatteryMonitor();
+}
+
 // static
 bool RendererWebKitPlatformSupportImpl::SetSandboxEnabledForTesting(
     bool enable) {