cc :: Move some tracking of layer_property_changed to main thread.

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 32 matching lines @@
 #include "cc/layers/painted_scrollbar_layer.h"
 #include "cc/proto/gfx_conversions.h"
 #include "cc/proto/layer_tree_host.pb.h"
 #include "cc/resources/ui_resource_request.h"
 #include "cc/scheduler/begin_frame_source.h"
 #include "cc/trees/draw_property_utils.h"
 #include "cc/trees/layer_tree_host_client.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/layer_tree_host_impl.h"
 #include "cc/trees/layer_tree_impl.h"
+#include "cc/trees/property_tree_builder.h"
 #include "cc/trees/proxy_main.h"
 #include "cc/trees/remote_channel_impl.h"
 #include "cc/trees/single_thread_proxy.h"
 #include "cc/trees/tree_synchronizer.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/geometry/vector2d_conversions.h"
 
 namespace {
 static base::StaticAtomicSequenceNumber s_layer_tree_host_sequence_number;
 }
@@ skipping 817 matching lines @@
                           content_is_suitable_for_gpu_rasterization_);
     // Record how many pages actually get gpu rasterization when enabled.
     UMA_HISTOGRAM_BOOLEAN("Renderer4.GpuRasterizationUsed",
                           (has_gpu_rasterization_trigger_ &&
                            content_is_suitable_for_gpu_rasterization_));
   }
 
   gpu_rasterization_histogram_recorded_ = true;
 }
 
+void LayerTreeHost::BuildPropertyTreesForTesting() {
+  LayerTreeHostCommon::PreCalculateMetaInformationForTesting(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_);
+}
+
 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 676 matching lines @@
   LayerTreeHostCommon::CallFunctionForSubtree(
       root_layer(), [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