cc : Make CallFunctionForSubtree on impl use layer iterator

cc/debug/rasterize_and_record_benchmark_impl.cc

 // Copyright 2013 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/debug/rasterize_and_record_benchmark_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 107 matching lines @@
     return;
 
   if (settings->HasKey("rasterize_repeat_count"))
     settings->GetInteger("rasterize_repeat_count", &rasterize_repeat_count_);
 }
 
 RasterizeAndRecordBenchmarkImpl::~RasterizeAndRecordBenchmarkImpl() {}
 
 void RasterizeAndRecordBenchmarkImpl::DidCompleteCommit(
     LayerTreeHostImpl* host) {
-  LayerTreeHostCommon::CallFunctionForSubtree(
-      host->RootLayer(), [this](LayerImpl* layer) {
+  LayerTreeHostCommon::CallFunctionForEveryLayer(
+      host->active_tree(), [this](LayerImpl* layer) {
         rasterize_results_.total_layers++;
         layer->RunMicroBenchmark(this);
       });
 
   scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
   result->SetDouble("rasterize_time_ms",
                     rasterize_results_.total_best_time.InMillisecondsF());
   result->SetDouble("total_pictures_in_pile_size",
                     static_cast<int>(rasterize_results_.total_memory_usage));
   result->SetInteger("pixels_rasterized", rasterize_results_.pixels_rasterized);
@@ skipping 76 matching lines @@
       total_memory_usage(0),
       total_layers(0),
       total_picture_layers(0),
       total_picture_layers_with_no_content(0),
       total_picture_layers_off_screen(0) {
 }
 
 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}
 
 }  // namespace cc