Revert of Remove ForceReclaimResources

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 76 matching lines @@
     std::unique_ptr<CopyOutputRequest> copy_request) {
   if (!current_surface_) {
     copy_request->SendEmptyResult();
     return;
   }
   DCHECK(current_surface_->factory().get() == this);
   current_surface_->RequestCopyOfOutput(std::move(copy_request));
   manager_->SurfaceModified(current_surface_->surface_id());
 }
 
+void SurfaceFactory::ClearSurface() {
+  if (!current_surface_)
+    return;
+  current_surface_->EvictFrame();
+  manager_->SurfaceModified(current_surface_->surface_id());
+}
+
 void SurfaceFactory::WillDrawSurface(const LocalFrameId& id,
                                      const gfx::Rect& damage_rect) {
   client_->WillDrawSurface(id, damage_rect);
 }
 
 void SurfaceFactory::ReceiveFromChild(
     const TransferableResourceArray& resources) {
   holder_.ReceiveFromChild(resources);
 }
 
@@ skipping 12 matching lines @@
   manager_->RegisterSurface(surface.get());
   return surface;
 }
 
 void SurfaceFactory::Destroy(std::unique_ptr<Surface> surface) {
   if (manager_)
     manager_->Destroy(std::move(surface));
 }
 
 }  // namespace cc