WIP - compositor worker mega patch.

cc/trees/layer_tree_host_common.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_common.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 2781 matching lines @@
       inputs->root_layer, inputs->page_scale_layer,
       inputs->inner_viewport_scroll_layer, inputs->outer_viewport_scroll_layer,
       overscroll_elasticity_layer, elastic_overscroll,
       inputs->page_scale_factor, inputs->device_scale_factor,
       gfx::Rect(inputs->device_viewport_size), inputs->device_transform,
       can_render_to_separate_surface, property_trees, &update_layer_list);
 }
 
 void LayerTreeHostCommon::CalculateDrawProperties(
     CalcDrawPropsImplInputs* inputs) {
+  TRACE_EVENT0("compositor-worker", "LayerTreeHostCommon::CalcDrawProperties");
   CalculateDrawPropertiesAndVerify(inputs, DONT_BUILD_PROPERTY_TREES);
 
   if (CdpPerfTracingEnabled()) {
     LayerTreeImpl* layer_tree_impl = inputs->root_layer->layer_tree_impl();
     if (layer_tree_impl->IsPendingTree() &&
         layer_tree_impl->is_first_frame_after_commit()) {
       LayerImpl* active_tree_root =
           layer_tree_impl->FindActiveTreeLayerById(inputs->root_layer->id());
       float jitter = 0.f;
       if (active_tree_root) {
         LayerImpl* last_scrolled_layer = layer_tree_impl->LayerById(
             active_tree_root->layer_tree_impl()->LastScrolledLayerId());
         jitter = CalculateFrameJitter(last_scrolled_layer);
       }
       TRACE_COUNTER1(TRACE_DISABLED_BY_DEFAULT("cc.debug.cdp-perf"), "jitter",
                      jitter);
       inputs->root_layer->layer_tree_impl()->set_is_first_frame_after_commit(
           false);
     }
   }
 }
 
 void LayerTreeHostCommon::CalculateDrawProperties(
     CalcDrawPropsImplInputsForTesting* inputs) {
+  TRACE_EVENT0("compositor-worker", "LayerTreeHostCommon::CalcDrawProperties");
   CalculateDrawPropertiesAndVerify(inputs, BUILD_PROPERTY_TREES_IF_NEEDED);
 }
 
 PropertyTrees* GetPropertyTrees(Layer* layer) {
   return layer->layer_tree_host()->property_trees();
 }
 
 PropertyTrees* GetPropertyTrees(LayerImpl* layer) {
   return layer->layer_tree_impl()->property_trees();
 }
 
 }  // namespace cc