[cc]: Add a BeginMainFrameNotExpectedSoon signal and route it to the RendererScheduler.

mojo/services/html_viewer/weblayertreeview_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/services/html_viewer/weblayertreeview_impl.h"
 
 #include "base/message_loop/message_loop_proxy.h"
 #include "cc/blink/web_layer_impl.h"
 #include "cc/layers/layer.h"
 #include "cc/output/begin_frame_args.h"
@@ skipping 47 matching lines @@
 
 WebLayerTreeViewImpl::~WebLayerTreeViewImpl() {
 }
 
 void WebLayerTreeViewImpl::WillBeginMainFrame() {
 }
 
 void WebLayerTreeViewImpl::DidBeginMainFrame() {
 }
 
+void WebLayerTreeViewImpl::BeginMainFrameNotExpectedSoon() {
+}
+
 void WebLayerTreeViewImpl::BeginMainFrame(const cc::BeginFrameArgs& args) {
   VLOG(2) << "WebLayerTreeViewImpl::BeginMainFrame";
   double frame_time_sec = (args.frame_time - base::TimeTicks()).InSecondsF();
   double deadline_sec = (args.deadline - base::TimeTicks()).InSecondsF();
   double interval_sec = args.interval.InSecondsF();
   blink::WebBeginFrameArgs web_begin_frame_args(
       frame_time_sec, deadline_sec, interval_sec);
   widget_->beginFrame(web_begin_frame_args);
 }
 
@@ skipping 160 matching lines @@
       base::Bind(&WebLayerTreeViewImpl::DidCreateSurfaceOnMainThread,
                  main_thread_bound_weak_ptr_,
                  id));
 }
 
 void WebLayerTreeViewImpl::DidCreateSurfaceOnMainThread(cc::SurfaceId id) {
   view_->SetSurfaceId(mojo::SurfaceId::From(id));
 }
 
 }  // namespace html_viewer