cc: Plumbing for storing property trees

cc/trees/property_tree_builder.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/trees/property_tree_builder.h"
 
 #include <map>
 #include <set>
 
 #include "cc/base/math_util.h"
@@ skipping 300 matching lines @@
 
 }  // namespace
 
 void PropertyTreeBuilder::BuildPropertyTrees(
     Layer* root_layer,
     const Layer* page_scale_layer,
     float page_scale_factor,
     float device_scale_factor,
     const gfx::Rect& viewport,
     const gfx::Transform& device_transform,
-    TransformTree* transform_tree,
-    ClipTree* clip_tree,
-    OpacityTree* opacity_tree) {
+    PropertyTrees* property_trees) {
   DataForRecursion data_for_recursion;
-  data_for_recursion.transform_tree = transform_tree;
-  data_for_recursion.clip_tree = clip_tree;
-  data_for_recursion.opacity_tree = opacity_tree;
+  data_for_recursion.transform_tree = &property_trees->transform_tree;
+  data_for_recursion.clip_tree = &property_trees->clip_tree;
+  data_for_recursion.opacity_tree = &property_trees->opacity_tree;
   data_for_recursion.transform_tree_parent = nullptr;
   data_for_recursion.transform_fixed_parent = nullptr;
   data_for_recursion.render_target = root_layer;
   data_for_recursion.clip_tree_parent = 0;
   data_for_recursion.opacity_tree_parent = -1;
   data_for_recursion.page_scale_layer = page_scale_layer;
   data_for_recursion.page_scale_factor = page_scale_factor;
   data_for_recursion.device_scale_factor = device_scale_factor;
   data_for_recursion.in_subtree_of_page_scale_application_layer = false;
   data_for_recursion.should_flatten = false;
   data_for_recursion.device_transform = &device_transform;
 
   ClipNode root_clip;
   root_clip.data.clip = viewport;
   root_clip.data.transform_id = 0;
-  data_for_recursion.clip_tree_parent = clip_tree->Insert(root_clip, 0);
+  data_for_recursion.clip_tree_parent =
+      data_for_recursion.clip_tree->Insert(root_clip, 0);
   BuildPropertyTreesInternal(root_layer, data_for_recursion);
 }
 
 }  // namespace cc