cc: Compute mask draw properties directly

cc/trees/draw_property_utils.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_DRAW_PROPERTY_UTILS_H_
 #define CC_TREES_DRAW_PROPERTY_UTILS_H_
 
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer_collections.h"
 
@@ skipping 59 matching lines @@
                               LayerList* visible_layer_list);
 
 void CC_EXPORT ComputeVisibleRects(LayerImpl* root_layer,
                                    PropertyTrees* property_trees,
                                    bool can_render_to_separate_surface,
                                    LayerImplList* visible_layer_list);
 
 void CC_EXPORT ComputeLayerDrawProperties(LayerImpl* layer,
                                           const PropertyTrees* property_trees);
 
+void CC_EXPORT ComputeMaskDrawProperties(LayerImpl* mask_layer,
+                                         const PropertyTrees* property_trees);
+
 void CC_EXPORT ComputeSurfaceDrawProperties(const PropertyTrees* property_trees,
                                             RenderSurfaceImpl* render_surface);
 
 bool CC_EXPORT LayerShouldBeSkipped(LayerImpl* layer,
                                     bool layer_is_drawn,
                                     const TransformTree& transform_tree,
                                     const EffectTree& effect_tree);
 
 bool CC_EXPORT LayerNeedsUpdate(Layer* layer,
                                 bool layer_is_drawn,
@@ skipping 34 matching lines @@
 
 void CC_EXPORT
 UpdateElasticOverscroll(PropertyTrees* property_trees,
                         const Layer* overscroll_elasticity_layer,
                         const gfx::Vector2dF& elastic_overscroll);
 
 }  // namespace draw_property_utils
 }  // namespace cc
 
 #endif  // CC_TREES_DRAW_PROPERTY_UTILS_H_