cc: Directly use property trees to calculate clip rect

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 64 matching lines @@
     const LayerImpl* page_scale_layer,
     const LayerImpl* inner_viewport_scroll_layer,
     const LayerImpl* outer_viewport_scroll_layer,
     const gfx::Vector2dF& elastic_overscroll,
     const LayerImpl* elastic_overscroll_application_layer,
     int max_texture_size,
     bool can_use_lcd_text,
     bool layers_always_allowed_lcd_text,
     bool can_render_to_separate_surface,
     bool can_adjust_raster_scales,
+    bool verify_clip_tree_calculations,
     LayerImplList* render_surface_layer_list,
     PropertyTrees* property_trees)
     : root_layer(root_layer),
       device_viewport_size(device_viewport_size),
       device_transform(device_transform),
       device_scale_factor(device_scale_factor),
       page_scale_factor(page_scale_factor),
       page_scale_layer(page_scale_layer),
       inner_viewport_scroll_layer(inner_viewport_scroll_layer),
       outer_viewport_scroll_layer(outer_viewport_scroll_layer),
       elastic_overscroll(elastic_overscroll),
       elastic_overscroll_application_layer(
           elastic_overscroll_application_layer),
       max_texture_size(max_texture_size),
       can_use_lcd_text(can_use_lcd_text),
       layers_always_allowed_lcd_text(layers_always_allowed_lcd_text),
       can_render_to_separate_surface(can_render_to_separate_surface),
       can_adjust_raster_scales(can_adjust_raster_scales),
+      verify_clip_tree_calculations(verify_clip_tree_calculations),
       render_surface_layer_list(render_surface_layer_list),
       property_trees(property_trees) {}
 
 LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting::
     CalcDrawPropsImplInputsForTesting(LayerImpl* root_layer,
                                       const gfx::Size& device_viewport_size,
                                       const gfx::Transform& device_transform,
                                       LayerImplList* render_surface_layer_list)
     : CalcDrawPropsImplInputs(root_layer,
                               device_viewport_size,
                               device_transform,
                               1.f,
                               1.f,
                               NULL,
                               NULL,
                               NULL,
                               gfx::Vector2dF(),
                               NULL,
                               std::numeric_limits<int>::max() / 2,
                               false,
                               false,
                               true,
                               false,
+                              true,
                               render_surface_layer_list,
                               GetPropertyTrees(root_layer)) {
   DCHECK(root_layer);
   DCHECK(render_surface_layer_list);
 }
 
 LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting::
     CalcDrawPropsImplInputsForTesting(LayerImpl* root_layer,
                                       const gfx::Size& device_viewport_size,
                                       LayerImplList* render_surface_layer_list)
@@ skipping 464 matching lines @@
         layer->replica_layer() ? layer->replica_layer()->mask_layer() : nullptr;
     if (replica_mask_layer)
       ComputeMaskLayerDrawProperties(layer, replica_mask_layer);
   }
 
   CalculateRenderSurfaceLayerList(
       inputs->root_layer->layer_tree_impl(), inputs->property_trees,
       inputs->render_surface_layer_list, inputs->can_render_to_separate_surface,
       inputs->max_texture_size);
 
+  if (inputs->verify_clip_tree_calculations)
+    draw_property_utils::VerifyClipTreeCalculations(visible_layer_list,
+                                                    inputs->property_trees);
+
   if (should_measure_property_tree_performance) {
     TRACE_EVENT_END0(TRACE_DISABLED_BY_DEFAULT("cc.debug.cdp-perf"),
                      "LayerTreeHostCommon::CalculateDrawProperties");
   }
 
   // A root layer render_surface should always exist after
   // CalculateDrawProperties.
   DCHECK(inputs->root_layer->render_surface());
 }
 
@@ skipping 78 matching lines @@
 
 PropertyTrees* GetPropertyTrees(Layer* layer) {
   return layer->layer_tree_host()->property_trees();
 }
 
 PropertyTrees* GetPropertyTrees(LayerImpl* layer) {
   return layer->layer_tree_impl()->property_trees();
 }
 
 }  // namespace cc