Implement merging non-composited paint property nodes in the PACompositor.

third_party/WebKit/Source/platform/graphics/paint/GeometryMapper.h

 // Copyright 2016 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 GeometryMapper_h
 #define GeometryMapper_h
 
 #include "platform/geometry/FloatRect.h"
 #include "platform/graphics/paint/PropertyTreeState.h"
 #include "platform/transforms/TransformationMatrix.h"
@@ skipping 99 matching lines @@
   // |ancestorState|, if the transform is invertible.
   //
   // If any of the paint property tree nodes in |localTransformState| are not
   // equal to or a descendant of that in |ancestorState|, returns the passed-in
   // rect and sets |success| to false. Otherwise, sets |success| to true.
   FloatRect ancestorToLocalRect(const FloatRect&,
                                 const PropertyTreeState& localTransformState,
                                 const PropertyTreeState& ancestorState,
                                 bool& success);
 
+  // Returns the matrix used in |LocalToAncestorRect|. Sets |success| to false
+  // iff |localTransformNode| is not equal to or a descendant of
+  // |ancestorState.transform|.
+  const TransformationMatrix& localToAncestorMatrix(
+      const TransformPaintPropertyNode* localTransformNode,
+      const PropertyTreeState& ancestorState,
+      bool& success);
+
  private:
   // Used by mapToVisualRectInDestinationSpace() after fast mapping (assuming
   // destination is an ancestor of source) failed.
   FloatRect slowMapToVisualRectInDestinationSpace(
       const FloatRect&,
       const PropertyTreeState& sourceState,
       const PropertyTreeState& destinationState,
       bool& success);
 
   // Used by mapRectToDestinationSpace() after fast mapping (assuming
   // destination is an ancestor of source) failed.
   FloatRect slowMapRectToDestinationSpace(
       const FloatRect&,
       const PropertyTreeState& sourceState,
       const PropertyTreeState& destinationState,
       bool& success);
 
-  // Returns the matrix used in |LocalToAncestorRect|. Sets |success| to false
-  // iff |localTransformNode| is not equal to or a descendant of
-  // |ancestorState.transform|.
-  const TransformationMatrix& localToAncestorMatrix(
-      const TransformPaintPropertyNode* localTransformNode,
-      const PropertyTreeState& ancestorState,
-      bool& success);
-
   // Returns the "clip visual rect" between |localTransformState| and
   // |ancestorState|. See above for the definition of "clip visual rect".
   FloatRect localToAncestorClipRect(
       const PropertyTreeState& localTransformState,
       const PropertyTreeState& ancestorState,
       bool& success);
 
   // Returns the precomputed data if already set, or adds and memoizes a new
   // PrecomputedDataForAncestor otherwise.
   PrecomputedDataForAncestor& getPrecomputedDataForAncestor(
@@ skipping 11 matching lines @@
       m_data;
 
   const TransformationMatrix m_identity;
 
   DISALLOW_COPY_AND_ASSIGN(GeometryMapper);
 };
 
 }  // namespace blink
 
 #endif  // GeometryMapper_h