cc: Fix draw transform computation for non-drawn layers

cc/layers/layer_impl.h

 // Copyright 2011 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_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 367 matching lines @@
   // is responsible for calling set_needs_update_draw_properties on the tree
   // so that its list can be recreated.
   void ClearRenderSurfaceLayerList();
   void SetHasRenderSurface(bool has_render_surface);
 
   RenderSurfaceImpl* render_surface() const { return render_surface_.get(); }
 
   DrawProperties& draw_properties() { return draw_properties_; }
   const DrawProperties& draw_properties() const { return draw_properties_; }
 
+  gfx::Transform DrawTransform() const;
+
   // The following are shortcut accessors to get various information from
   // draw_properties_
-  const gfx::Transform& draw_transform() const {
-    return draw_properties_.target_space_transform;
-  }
   const gfx::Transform& screen_space_transform() const {
     return draw_properties_.screen_space_transform;
   }
   float draw_opacity() const { return draw_properties_.opacity; }
   bool screen_space_transform_is_animating() const {
     return draw_properties_.screen_space_transform_is_animating;
   }
   bool can_use_lcd_text() const { return draw_properties_.can_use_lcd_text; }
   gfx::Rect clip_rect() const { return draw_properties_.clip_rect; }
   gfx::Rect drawable_content_rect() const {
@@ skipping 473 matching lines @@
   // If true, the layer or one of its descendants has a wheel or touch handler.
   bool layer_or_descendant_has_input_handler_;
   bool sorted_for_recursion_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_