cc: Use asynchronous set pixels API for impl-side painting.

cc/tile.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/tile.h"
 
 #include "cc/tile_manager.h"
 #include "third_party/khronos/GLES2/gl2.h"
 
 namespace cc {
@@ skipping 15 matching lines @@
 
 Tile::~Tile() {
   tile_manager_->UnregisterTile(this);
 }
 
 void Tile::set_priority(WhichTree tree, const TilePriority& priority) {
   tile_manager_->WillModifyTilePriority(this, tree, priority);
   priority_[tree] = priority;
 }
 
+ResourceProvider::ResourceId Tile::GetResourceId() const {
+  if (!managed_state_.resource)
+    return 0;
+  if (managed_state_.resource_is_being_initialized)
+    return 0;
+
+  return managed_state_.resource->id();
+}
+
 size_t Tile::bytes_consumed_if_allocated() const {
   DCHECK(format_ == GL_RGBA);
   return 4 * tile_size_.width() * tile_size_.height();
 }
 
 }  // namespace cc