cc: Remove usage of Layer draw_transform

cc/layers/layer.h

 // Copyright 2010 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_LAYERS_LAYER_H_
 #define CC_LAYERS_LAYER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 223 matching lines @@
 
   void AddClipChild(Layer* child);
   void RemoveClipChild(Layer* child);
 
   std::set<Layer*>* clip_children() { return clip_children_.get(); }
   const std::set<Layer*>* clip_children() const {
     return clip_children_.get();
   }
 
   // TODO(enne): Fix style here (and everywhere) once LayerImpl does the same.
-  gfx::Transform draw_transform() const;
   gfx::Transform screen_space_transform() const;
 
   void set_num_unclipped_descendants(size_t descendants) {
     num_unclipped_descendants_ = descendants;
   }
   size_t num_unclipped_descendants() const {
     return num_unclipped_descendants_;
   }
 
   void SetScrollOffset(const gfx::ScrollOffset& scroll_offset);
@@ skipping 437 matching lines @@
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_