Migrates battery_status from content/renderer/ to WebKit/platform/

content/shell/renderer/layout_test/blink_test_runner.cc

Index: content/shell/renderer/layout_test/blink_test_runner.cc
diff --git a/content/shell/renderer/layout_test/blink_test_runner.cc b/content/shell/renderer/layout_test/blink_test_runner.cc
index b72f9813b43227972f318f95dadd3acc9d7707dd..fb2fff0b0150caac81522a280d52c8a7cf3a78d8 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.cc
+++ b/content/shell/renderer/layout_test/blink_test_runner.cc
@@ -321,11 +321,6 @@ void BlinkTestRunner::ResetScreenOrientation() {
   mock_client->ResetData();
 }
 
-void BlinkTestRunner::DidChangeBatteryStatus(
-    const blink::WebBatteryStatus& status) {
-  MockBatteryStatusChanged(status);
-}
-
 void BlinkTestRunner::PrintMessage(const std::string& message) {
   Send(new ShellViewHostMsg_PrintMessage(routing_id(), message));
 }