cc: Compute transform to target using effect id.

cc/trees/property_tree.h

 // 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.
 
 #ifndef CC_TREES_PROPERTY_TREE_H_
 #define CC_TREES_PROPERTY_TREE_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 219 matching lines @@
   void SetContentTargetId(int node_id, int content_target_id);
 
   const std::vector<TransformCachedNodeData>& cached_data() const {
     return cached_data_;
   }
 
   void ToProtobuf(proto::PropertyTree* proto) const;
   void FromProtobuf(const proto::PropertyTree& proto,
                     std::unordered_map<int, int>* node_id_to_index_map);
 
- private:
-  // Returns true iff the node at |desc_id| is a descendant of the node at
-  // |anc_id|.
-  bool IsDescendant(int desc_id, int anc_id) const;
-
   // Computes the combined transform between |source_id| and |dest_id| and
   // returns false if the inverse of a singular transform was used. These two
   // nodes must be on the same ancestor chain.
   bool CombineTransformsBetween(int source_id,
                                 int dest_id,
                                 gfx::Transform* transform) const;
 
   // Computes the combined inverse transform between |source_id| and |dest_id|
   // and returns false if the inverse of a singular transform was used. These
   // two nodes must be on the same ancestor chain.
   bool CombineInversesBetween(int source_id,
                               int dest_id,
                               gfx::Transform* transform) const;
 
+ private:
+  // Returns true iff the node at |desc_id| is a descendant of the node at
+  // |anc_id|.
+  bool IsDescendant(int desc_id, int anc_id) const;
+
   void UpdateLocalTransform(TransformNode* node);
   void UpdateScreenSpaceTransform(TransformNode* node,
                                   TransformNode* parent_node,
                                   TransformNode* target_node);
   void UpdateSurfaceContentsScale(TransformNode* node);
   void UpdateTargetSpaceTransform(TransformNode* node,
                                   TransformNode* target_node);
   void UpdateAnimationProperties(TransformNode* node,
                                  TransformNode* parent_node);
   void UndoSnapping(TransformNode* node);
@@ skipping 268 matching lines @@
   CombinedAnimationScale GetAnimationScales(int transform_node_id,
                                             LayerTreeImpl* layer_tree_impl);
   void SetAnimationScalesForTesting(int transform_id,
                                     float maximum_animation_scale,
                                     float starting_animation_scale);
   void ResetCachedData();
   void UpdateCachedNumber();
   gfx::Transform ToScreenSpaceTransformWithoutSurfaceContentsScale(
       int transform_id,
       int effect_id) const;
+  bool ComputeTransformToTarget(int transform_id,
+                                int effect_id,
+                                gfx::Transform* transform) const;
 
  private:
   gfx::Vector2dF inner_viewport_container_bounds_delta_;
   gfx::Vector2dF outer_viewport_container_bounds_delta_;
   gfx::Vector2dF inner_viewport_scroll_bounds_delta_;
 
   PropertyTreesCachedData cached_data_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_PROPERTY_TREE_H_