Add BatteryStatusEventPump in Chromium for sending Battery status events

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 b507a732a1eacb48b0ecdf3cac6f32fa3f736a22..b5a97e6b72d17bfd4fccf5bef3237d17b1e08334 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.cc
+++ b/content/renderer/renderer_webkitplatformsupport_impl.cc
@@ -38,6 +38,7 @@
 #include "content/public/common/content_switches.h"
 #include "content/public/common/webplugininfo.h"
 #include "content/public/renderer/content_renderer_client.h"
+#include "content/renderer/battery_status/battery_status_event_pump.h"
 #include "content/renderer/device_sensors/device_motion_event_pump.h"
 #include "content/renderer/device_sensors/device_orientation_event_pump.h"
 #include "content/renderer/dom_storage/webstoragenamespace_impl.h"
@@ -1165,6 +1166,17 @@ void RendererWebKitPlatformSupportImpl::SetMockScreenOrientationForTesting(
 
 //------------------------------------------------------------------------------
 
+void RendererWebKitPlatformSupportImpl::setBatteryStatusListener(
+    blink::WebBatteryStatusListener* listener) {
+  if (!battery_status_event_pump_) {
+      battery_status_event_pump_.reset(new BatteryStatusEventPump);
+      battery_status_event_pump_->Attach(RenderThreadImpl::current());
+    }
+  battery_status_event_pump_->SetBatteryStatusListener(listener);
+}
+
+//------------------------------------------------------------------------------
+
 void RendererWebKitPlatformSupportImpl::queryStorageUsageAndQuota(
     const blink::WebURL& storage_partition,
     blink::WebStorageQuotaType type,