Revert of 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 7175b432cdb0e2af9a77fcb2527e4f5f6a47b9ac..30310746ef654f6a12dfda52c47180307fe9626b 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.cc
+++ b/content/shell/renderer/layout_test/blink_test_runner.cc
@@ -302,6 +302,11 @@
   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));
 }