Disable scheduler deadline task on battery power in Windows

cc/trees/thread_proxy.cc

Index: cc/trees/thread_proxy.cc
diff --git a/cc/trees/thread_proxy.cc b/cc/trees/thread_proxy.cc
index 93b4c65f5fa19e7b1e358462cd93ca4489b7e43c..f14765eb643c36a9d548a55000b0abf543288b08 100644
--- a/cc/trees/thread_proxy.cc
+++ b/cc/trees/thread_proxy.cc
@@ -352,6 +352,10 @@ BeginFrameSource* ThreadProxy::ExternalBeginFrameSource() {
   return impl().layer_tree_host_impl.get();
 }
 
+base::PowerMonitor* ThreadProxy::PowerMonitor() {
+  return base::PowerMonitor::Get();
+}
+
 void ThreadProxy::WillBeginImplFrame(const BeginFrameArgs& args) {
   impl().layer_tree_host_impl->WillBeginImplFrame(args);
 }