Remove parts of //cc we aren't using

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 "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 {
-
-// Container for properties that layers need to compute before they can be
-// drawn.
-template <typename LayerType>
-struct CC_EXPORT DrawProperties {
-  DrawProperties()
-      : opacity(0.f),
-        blend_mode(SkXfermode::kSrcOver_Mode),
-        opacity_is_animating(false),
-        screen_space_opacity_is_animating(false),
-        target_space_transform_is_animating(false),
-        screen_space_transform_is_animating(false),
-        can_use_lcd_text(false),
-        is_clipped(false),
-        render_target(nullptr),
-        contents_scale_x(1.f),
-        contents_scale_y(1.f),
-        num_unclipped_descendants(0),
-        layer_or_descendant_has_copy_request(false),
-        layer_or_descendant_has_input_handler(false),
-        layer_or_descendant_is_drawn(false),
-        has_child_with_a_scroll_parent(false),
-        sorted_for_recursion(false),
-        visited(false),
-        index_of_first_descendants_addition(0),
-        num_descendants_added(0),
-        index_of_first_render_surface_layer_list_addition(0),
-        num_render_surfaces_added(0),
-        last_drawn_render_surface_layer_list_id(0),
-        ideal_contents_scale(0.f),
-        maximum_animation_contents_scale(0.f),
-        page_scale_factor(0.f),
-        device_scale_factor(0.f) {}
-
-  // Transforms objects from content space to target surface space, where
-  // this layer would be drawn.
-  gfx::Transform target_space_transform;
-
-  // Transforms objects from content space to screen space (viewport space).
-  gfx::Transform screen_space_transform;
-
-  // Known occlusion above the layer mapped to the content space of the layer.
-  Occlusion occlusion_in_content_space;
-
-  // DrawProperties::opacity may be different than LayerType::opacity,
-  // particularly in the case when a RenderSurface re-parents the layer's
-  // opacity, or when opacity is compounded by the hierarchy.
-  float opacity;
-
-  // DrawProperties::blend_mode may be different than LayerType::blend_mode,
-  // when a RenderSurface re-parents the layer's blend_mode.
-  SkXfermode::Mode blend_mode;
-
-  // xxx_is_animating flags are used to indicate whether the DrawProperties
-  // are actually meaningful on the main thread. When the properties are
-  // animating, the main thread may not have the same values that are used
-  // to draw.
-  bool opacity_is_animating;
-  bool screen_space_opacity_is_animating;
-  bool target_space_transform_is_animating;
-  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.
-  LayerType* render_target;
-
-  // This rect is in the layer's content space.
-  gfx::Rect visible_content_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.
-  gfx::Rect clip_rect;
-
-  // The scale used to move between layer space and content space, and bounds
-  // of the space. One is always a function of the other, but which one
-  // depends on the layer type. For picture layers, this is an ideal scale,
-  // and not always the one used.
-  float contents_scale_x;
-  float contents_scale_y;
-  gfx::Size content_bounds;
-
-  // Number of descendants with a clip parent that is our ancestor. NB - this
-  // does not include our clip children because they are clipped by us.
-  int num_unclipped_descendants;
-
-  // If true, the layer or some layer in its sub-tree has a CopyOutputRequest
-  // present on it.
-  bool layer_or_descendant_has_copy_request;
-
-  // If true, the layer or one of its descendants has a wheel or touch handler.
-  bool layer_or_descendant_has_input_handler;
-
-  // If true, the layer or one of its descendants is drawn
-  bool layer_or_descendant_is_drawn;
-
-  // This is true if the layer has any direct child that has a scroll parent.
-  // This layer will not be the scroll parent in this case. This information
-  // lets us avoid work in CalculateDrawPropertiesInternal -- if none of our
-  // children have scroll parents, we will not need to recur out of order.
-  bool has_child_with_a_scroll_parent;
-
-  // This is true if the order (wrt to its siblings in the tree) in which the
-  // layer will be visited while computing draw properties has been determined.
-  bool sorted_for_recursion;
-
-  // This is used to sanity-check CDP and ensure that we don't revisit a layer.
-  bool visited;
-
-  // If this layer is visited out of order, its contribution to the descendant
-  // and render surface layer lists will be put aside in a temporary list.
-  // These values will allow for an efficient reordering of these additions.
-  size_t index_of_first_descendants_addition;
-  size_t num_descendants_added;
-  size_t index_of_first_render_surface_layer_list_addition;
-  size_t num_render_surfaces_added;
-
-  // Each time we generate a new render surface layer list, an ID is used to
-  // identify it. |last_drawn_render_surface_layer_list_id| is set to the ID
-  // that marked the render surface layer list generation which last updated
-  // these draw properties and determined that this layer will draw itself.
-  // If these draw properties are not a part of the render surface layer list,
-  // or the layer doesn't contribute anything, then this ID will be either out
-  // of date or 0.
-  int last_drawn_render_surface_layer_list_id;
-
-  // The scale at which content for the layer should be rastered in order to be
-  // perfectly crisp.
-  float ideal_contents_scale;
-
-  // The maximum scale during the layers current animation at which content
-  // should be rastered at to be crisp.
-  float maximum_animation_contents_scale;
-
-  // The page scale factor that is applied to the layer. Since some layers may
-  // have page scale applied and others not, this may differ between layers.
-  float page_scale_factor;
-
-  // The device scale factor that is applied to the layer.
-  float device_scale_factor;
-};
-
-}  // namespace cc
-
-#endif  // CC_LAYERS_DRAW_PROPERTIES_H_