cc: Move RenderTarget Information to Effect Tree

cc/layers/draw_properties.h

 // Copyright 2012 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_DRAW_PROPERTIES_H_
 #define CC_LAYERS_DRAW_PROPERTIES_H_
 
 #include <stddef.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/trees/occlusion.h"
 #include "third_party/skia/include/core/SkXfermode.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
-class LayerImpl;
+class RenderSurfaceImpl;
 
 // Container for properties that layers need to compute before they can be
 // drawn.
 struct CC_EXPORT DrawProperties {
   DrawProperties();
   ~DrawProperties();
 
   // Transforms objects from content space to target surface space, where
   // this layer would be drawn.
   gfx::Transform target_space_transform;
@@ skipping 14 matching lines @@
   // animating, the main thread may not have the same values that are used
   // to draw.
   bool screen_space_transform_is_animating;
 
   // True if the layer can use LCD text.
   bool can_use_lcd_text;
 
   // True if the layer needs to be clipped by clip_rect.
   bool is_clipped;
 
-  // The layer whose coordinate space this layer draws into. This can be
-  // either the same layer (draw_properties_.render_target == this) or an
-  // ancestor of this layer.
-  LayerImpl* render_target;
-
   // This rect is a bounding box around what part of the layer is visible, in
   // the layer's coordinate space.
   gfx::Rect visible_layer_rect;
 
   // In target surface space, the rect that encloses the clipped, drawable
   // content of the layer.
   gfx::Rect drawable_content_rect;
 
   // In target surface space, the original rect that clipped this layer. This
   // value is used to avoid unnecessarily changing GL scissor state.
@@ skipping 17 matching lines @@
   float maximum_animation_contents_scale;
 
   // The scale during the layer animation start at which content should be
   // rastered at to be crisp.
   float starting_animation_contents_scale;
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_DRAW_PROPERTIES_H_