Update from https://crrev.com/306655

cc/debug/rasterize_and_record_benchmark_impl.cc

Index: cc/debug/rasterize_and_record_benchmark_impl.cc
diff --git a/cc/debug/rasterize_and_record_benchmark_impl.cc b/cc/debug/rasterize_and_record_benchmark_impl.cc
index e276a41c17854347638006c67e027b094571fb04..c1fc80983228cb562c6b84af4e54b29114e7a4fe 100644
--- a/cc/debug/rasterize_and_record_benchmark_impl.cc
+++ b/cc/debug/rasterize_and_record_benchmark_impl.cc
@@ -173,6 +173,8 @@ void RasterizeAndRecordBenchmarkImpl::DidCompleteCommit(
   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",
+                    rasterize_results_.total_memory_usage);
   result->SetInteger("pixels_rasterized", rasterize_results_.pixels_rasterized);
   result->SetInteger("pixels_rasterized_with_non_solid_color",
                      rasterize_results_.pixels_rasterized_with_non_solid_color);
@@ -263,16 +265,22 @@ void RasterizeAndRecordBenchmarkImpl::RunOnLayer(PictureLayerImpl* layer) {
     rasterize_results_.pixels_rasterized += tile_size;
     rasterize_results_.total_best_time += min_time;
   }
+
+  const RasterSource* layer_raster_source = layer->GetRasterSource();
+  rasterize_results_.total_memory_usage +=
+      layer_raster_source->GetPictureMemoryUsage();
 }
 
 RasterizeAndRecordBenchmarkImpl::RasterizeResults::RasterizeResults()
     : pixels_rasterized(0),
       pixels_rasterized_with_non_solid_color(0),
       pixels_rasterized_as_opaque(0),
+      total_memory_usage(0),
       total_layers(0),
       total_picture_layers(0),
       total_picture_layers_with_no_content(0),
-      total_picture_layers_off_screen(0) {}
+      total_picture_layers_off_screen(0) {
+}
 
 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}