Disable scheduler deadline task on battery power in Windows

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index 64e2ab3d15447368f32fa89320b4ba78764c1252..e1a4af4c6c2bfd5ee5ae25ef10a3b415bb829483 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -555,6 +555,10 @@ BeginFrameSource* SingleThreadProxy::ExternalBeginFrameSource() {
   return layer_tree_host_impl_.get();
 }
 
+base::PowerMonitor* SingleThreadProxy::PowerMonitor() {
+  return base::PowerMonitor::Get();
+}
+
 void SingleThreadProxy::WillBeginImplFrame(const BeginFrameArgs& args) {
   layer_tree_host_impl_->WillBeginImplFrame(args);
 }