[NOT FOR COMMIT] Hacks to get hardware canvas

cc/layers/texture_layer_impl.cc

 // Copyright 2011 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/layers/texture_layer_impl.h"
 
 #include <vector>
 
 #include "base/strings/stringprintf.h"
 #include "cc/layers/quad_sink.h"
@@ skipping 197 matching lines @@
 
   return Region();
 }
 
 void TextureLayerImpl::ReleaseResources() {
   if (external_texture_resource_ && !uses_mailbox_) {
     ResourceProvider* resource_provider =
         layer_tree_impl()->resource_provider();
     resource_provider->DeleteResource(external_texture_resource_);
   }
+  FreeTextureMailbox();
   texture_copy_.reset();
   texture_id_ = 0;
   external_texture_resource_ = 0;
   valid_texture_copy_ = false;
 }
 
 const char* TextureLayerImpl::LayerTypeAsString() const {
   return "cc::TextureLayerImpl";
 }
 
 void TextureLayerImpl::FreeTextureMailbox() {
   if (!uses_mailbox_)
     return;
   if (own_mailbox_) {
     DCHECK(!external_texture_resource_);
     if (release_callback_)
       release_callback_->Run(texture_mailbox_.sync_point(), false);
     texture_mailbox_ = TextureMailbox();
     release_callback_.reset();
   } else if (external_texture_resource_) {
     DCHECK(!own_mailbox_);
     ResourceProvider* resource_provider =
         layer_tree_impl()->resource_provider();
     resource_provider->DeleteResource(external_texture_resource_);
     external_texture_resource_ = 0;
   }
 }
 
 }  // namespace cc