Add a test checking that compositor works in a reused renderer.

cc/surfaces/surface_factory.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 "cc/surfaces/surface_factory.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 87 matching lines @@
 }
 
 void SurfaceFactory::RefResources(const TransferableResourceArray& resources) {
   holder_.RefResources(resources);
 }
 
 void SurfaceFactory::UnrefResources(const ReturnedResourceArray& resources) {
   holder_.UnrefResources(resources);
 }
 
+void SurfaceFactory::RunDrawCallbacks() {
+  if (current_surface_)
+    current_surface_->RunDrawCallbacks();
+}
+
 void SurfaceFactory::OnReferencedSurfacesChanged(
     Surface* surface,
     const std::vector<SurfaceId>* active_referenced_surfaces,
     const std::vector<SurfaceId>* pending_referenced_surfaces) {
   client_->ReferencedSurfacesChanged(surface->surface_id().local_surface_id(),
                                      active_referenced_surfaces,
                                      pending_referenced_surfaces);
 }
 
 void SurfaceFactory::OnSurfaceActivated(Surface* surface) {
@@ skipping 30 matching lines @@
   surface->AddObserver(this);
   return surface;
 }
 
 void SurfaceFactory::Destroy(std::unique_ptr<Surface> surface) {
   surface->RemoveObserver(this);
   manager_->DestroySurface(std::move(surface));
 }
 
 }  // namespace cc