cc: Send updated tile priority with tiles into tracing.

cc/trees/layer_tree_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/trees/layer_tree_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 
@@ skipping 964 matching lines @@
 }
 
 void LayerTreeImpl::SetNeedsRedraw() {
   layer_tree_host_impl_->SetNeedsRedraw();
 }
 
 AnimationRegistrar* LayerTreeImpl::GetAnimationRegistrar() const {
   return layer_tree_host_impl_->animation_registrar();
 }
 
-void LayerTreeImpl::GetAllTilesForTracing(std::set<const Tile*>* tiles) const {
+void LayerTreeImpl::GetAllTilesAndPrioritiesForTracing(
+    std::map<const Tile*, TilePriority>* tile_map) const {
   typedef LayerIterator<LayerImpl> LayerIteratorType;
   LayerIteratorType end = LayerIteratorType::End(&render_surface_layer_list_);
   for (LayerIteratorType it =
            LayerIteratorType::Begin(&render_surface_layer_list_);
        it != end;
        ++it) {
     if (!it.represents_itself())
       continue;
     LayerImpl* layer_impl = *it;
-    layer_impl->GetAllTilesForTracing(tiles);
+    layer_impl->GetAllTilesAndPrioritiesForTracing(tile_map);
   }
 }
 
 void LayerTreeImpl::AsValueInto(base::trace_event::TracedValue* state) const {
   TracedValue::MakeDictIntoImplicitSnapshot(state, "cc::LayerTreeImpl", this);
   state->SetInteger("source_frame_number", source_frame_number_);
 
   state->BeginDictionary("root_layer");
   root_layer_->AsValueInto(state);
   state->EndDictionary();
@@ skipping 631 matching lines @@
     scoped_ptr<PendingPageScaleAnimation> pending_animation) {
   pending_page_scale_animation_ = pending_animation.Pass();
 }
 
 scoped_ptr<PendingPageScaleAnimation>
     LayerTreeImpl::TakePendingPageScaleAnimation() {
   return pending_page_scale_animation_.Pass();
 }
 
 }  // namespace cc