cc: Make property trees support resourceless draw mode

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_lists.h"
 
 namespace gfx {
 class Rect;
 class Transform;
 }  // namespace gfx
 
 namespace cc {
 
 class ClipTree;
 struct DrawProperties;
 class Layer;
 class LayerImpl;
 struct RenderSurfaceDrawProperties;
 class RenderSurfaceImpl;
 class EffectTree;
 class TransformTree;
 class PropertyTrees;
 
 // Computes combined clips for every node in |clip_tree|. This function requires
 // that |transform_tree| has been updated via |ComputeTransforms|.
-// TODO(vollick): ComputeClips and ComputeTransforms will eventually need to be
-// done on both threads.
-void CC_EXPORT
-ComputeClips(ClipTree* clip_tree, const TransformTree& transform_tree);
+void CC_EXPORT ComputeClips(ClipTree* clip_tree,
+                            const TransformTree& transform_tree,
+                            bool non_root_surfaces_enabled);
 
 // Computes combined (screen space) transforms for every node in the transform
 // tree. This must be done prior to calling |ComputeClips|.
 void CC_EXPORT ComputeTransforms(TransformTree* transform_tree);
 
 // Computes screen space opacity for every node in the opacity tree.
 void CC_EXPORT ComputeOpacities(EffectTree* effect_tree);
 
 // Computes the visible content rect for every layer under |root_layer|. The
 // visible content rect is the clipped content space rect that will be used for
 // recording.
 void CC_EXPORT BuildPropertyTreesAndComputeVisibleRects(
     Layer* root_layer,
     const Layer* page_scale_layer,
     const Layer* inner_viewport_scroll_layer,
     const Layer* outer_viewport_scroll_layer,
     float page_scale_factor,
     float device_scale_factor,
     const gfx::Rect& viewport,
     const gfx::Transform& device_transform,
+    bool can_render_to_separate_surface,
     PropertyTrees* property_trees,
     LayerList* update_layer_list);
 
 void CC_EXPORT BuildPropertyTreesAndComputeVisibleRects(
     LayerImpl* root_layer,
     const LayerImpl* page_scale_layer,
     const LayerImpl* inner_viewport_scroll_layer,
     const LayerImpl* outer_viewport_scroll_layer,
     float page_scale_factor,
     float device_scale_factor,
     const gfx::Rect& viewport,
     const gfx::Transform& device_transform,
+    bool can_render_to_separate_surface,
     PropertyTrees* property_trees,
     LayerImplList* update_layer_list);
 
 void CC_EXPORT
 ComputeVisibleRectsUsingPropertyTrees(Layer* root_layer,
                                       PropertyTrees* property_trees,
+                                      bool can_render_to_separate_surface,
                                       LayerList* update_layer_list);
 
 void CC_EXPORT
 ComputeVisibleRectsUsingPropertyTrees(LayerImpl* root_layer,
                                       PropertyTrees* property_trees,
+                                      bool can_render_to_separate_surface,
                                       LayerImplList* update_layer_list);
 
 void CC_EXPORT ComputeLayerDrawPropertiesUsingPropertyTrees(
     const LayerImpl* layer,
     const PropertyTrees* property_trees,
     bool layers_always_allowed_lcd_text,
     bool can_use_lcd_text,
     DrawProperties* draw_properties);
 
 void CC_EXPORT ComputeSurfaceDrawPropertiesUsingPropertyTrees(
@@ skipping 29 matching lines @@
 
 void CC_EXPORT
 UpdatePageScaleFactorInPropertyTrees(PropertyTrees* property_trees,
                                      const Layer* page_scale_layer,
                                      float page_scale_factor,
                                      float device_scale_factor,
                                      const gfx::Transform device_transform);
 }  // namespace cc
 
 #endif  // CC_TREES_DRAW_PROPERTY_UTILS_H_