cc: Optimize decode scheduling for checker-images.

cc/test/fake_layer_tree_host_impl_client.cc

 // Copyright 2012 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/test/fake_layer_tree_host_impl_client.h"
 #include "cc/trees/mutator_host.h"
 
 namespace cc {
 
 bool FakeLayerTreeHostImplClient::IsInsideDraw() {
   return false;
 }
 
 void FakeLayerTreeHostImplClient::PostAnimationEventsToMainThreadOnImplThread(
     std::unique_ptr<MutatorEvents> events) {}
 
+void FakeLayerTreeHostImplClient::NeedsImplSideInvalidation() {
+  did_request_impl_side_invalidation_ = true;
+}
+
 }  // namespace cc