Add fixed raster scale use counter histograms.

cc/trees/layer_tree_host.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_host.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 931 matching lines @@
   PropertyTreeBuilder::PreCalculateMetaInformation(root_layer_.get());
   gfx::Transform identity_transform;
   PropertyTreeBuilder::BuildPropertyTrees(
       root_layer_.get(), page_scale_layer_.get(),
       inner_viewport_scroll_layer_.get(), outer_viewport_scroll_layer_.get(),
       overscroll_elasticity_layer_.get(), elastic_overscroll_,
       page_scale_factor_, device_scale_factor_,
       gfx::Rect(device_viewport_size_), identity_transform, &property_trees_);
 }
 
+void LayerTreeHost::ReportFixedRasterScaleUseCounters(
+    bool has_fixed_raster_scale_blurry_content,
+    bool has_fixed_raster_scale_potential_performance_regression) {
+  client_->ReportFixedRasterScaleUseCounters(
+      has_fixed_raster_scale_blurry_content,
+      has_fixed_raster_scale_potential_performance_regression);
+}
+
 bool LayerTreeHost::UsingSharedMemoryResources() {
   return GetRendererCapabilities().using_shared_memory_resources;
 }
 
 bool LayerTreeHost::DoUpdateLayers(Layer* root_layer) {
   TRACE_EVENT1("cc", "LayerTreeHost::DoUpdateLayers", "source_frame_number",
                source_frame_number());
 
   UpdateHudLayer();
 
@@ skipping 689 matching lines @@
   int seq_num = property_trees_.sequence_number;
   LayerTreeHostCommon::CallFunctionForEveryLayer(this, [seq_num](Layer* layer) {
     layer->set_property_tree_sequence_number(seq_num);
   });
 
   surface_id_namespace_ = proto.surface_id_namespace();
   next_surface_sequence_ = proto.next_surface_sequence();
 }
 
 }  // namespace cc