cc: Add scheduler support for invalidating content on impl thread.

cc/trees/proxy_impl.cc

 // Copyright 2015 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 "cc/trees/proxy_impl.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 537 matching lines @@
   layer_tree_host_impl_->PrepareTiles();
 }
 
 void ProxyImpl::ScheduledActionInvalidateCompositorFrameSink() {
   TRACE_EVENT0("cc", "ProxyImpl::ScheduledActionInvalidateCompositorFrameSink");
   DCHECK(IsImplThread());
   DCHECK(layer_tree_host_impl_->compositor_frame_sink());
   layer_tree_host_impl_->compositor_frame_sink()->Invalidate();
 }
 
+void ProxyImpl::ScheduledActionPerformImplSideInvalidation() {
+  NOTIMPLEMENTED();
+}
+
 void ProxyImpl::SendBeginMainFrameNotExpectedSoon() {
   DCHECK(IsImplThread());
   MainThreadTaskRunner()->PostTask(
       FROM_HERE, base::Bind(&ProxyMain::BeginMainFrameNotExpectedSoon,
                             proxy_main_weak_ptr_));
 }
 
 DrawResult ProxyImpl::DrawInternal(bool forced_draw) {
   TRACE_EVENT_SYNTHETIC_DELAY("cc.Draw");
 
@@ skipping 67 matching lines @@
 ProxyImpl::BlockedMainCommitOnly& ProxyImpl::blocked_main_commit() {
   DCHECK(IsMainThreadBlocked() && commit_completion_event_);
   return main_thread_blocked_commit_vars_unsafe_;
 }
 
 base::SingleThreadTaskRunner* ProxyImpl::MainThreadTaskRunner() {
   return task_runner_provider_->MainThreadTaskRunner();
 }
 
 }  // namespace cc