cc: Remove usage of ComputeVisibleRects on main thread

cc/debug/invalidation_benchmark.cc

 // Copyright 2014 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/debug/invalidation_benchmark.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 52 matching lines @@
 InvalidationBenchmark::~InvalidationBenchmark() {
 }
 
 void InvalidationBenchmark::DidUpdateLayers(LayerTreeHost* host) {
   LayerTreeHostCommon::CallFunctionForEveryLayer(
       host, [this](Layer* layer) { layer->RunMicroBenchmark(this); });
 }
 
 void InvalidationBenchmark::RunOnLayer(PictureLayer* layer) {
   PropertyTrees* property_trees = layer->layer_tree_host()->property_trees();
-  LayerList update_list;
-  update_list.push_back(layer);
-  draw_property_utils::ComputeVisibleRectsForTesting(
-      property_trees, property_trees->non_root_surfaces_enabled, &update_list);
-  gfx::Rect visible_layer_rect = layer->visible_layer_rect_for_testing();
+  const TransformTree& transform_tree = property_trees->transform_tree;
+  int index = layer->transform_tree_index();
+  layer->layer_tree_host()->BuildPropertyTreesForTesting();
+  gfx::Point position =
+      gfx::Point(layer->position().x(), layer->position().y());
+  gfx::Rect layer_rect = gfx::Rect(position, layer->bounds());
+  gfx::Rect screen_space_rect = MathUtil::MapEnclosingClippedRect(
+      transform_tree.ToScreen(index), layer_rect);
+  screen_space_rect.Intersect(
+      gfx::Rect(layer->layer_tree_host()->device_viewport_size()));
+  gfx::Rect visible_layer_rect = MathUtil::MapEnclosingClippedRect(

[sunxd, 2016/08/09 19:17:50]

I forgot to make it a projection here. Please ignore it before the next patch.

+      transform_tree.FromScreen(index), screen_space_rect);
   switch (mode_) {
     case FIXED_SIZE: {
       // Invalidation with a random position and fixed size.
       int x = LCGRandom() * (visible_layer_rect.width() - width_);
       int y = LCGRandom() * (visible_layer_rect.height() - height_);
       gfx::Rect invalidation_rect(x, y, width_, height_);
       layer->SetNeedsDisplayRect(invalidation_rect);
       break;
     }
     case LAYER: {
@@ skipping 43 matching lines @@
 // high quality, but they need to be identical in each run. Therefore, we use a
 // LCG and keep the state locally in the benchmark.
 float InvalidationBenchmark::LCGRandom() {
   const uint32_t a = 1664525;
   const uint32_t c = 1013904223;
   seed_ = a * seed_ + c;
   return static_cast<float>(seed_) / std::numeric_limits<uint32_t>::max();
 }
 
 }  // namespace cc