Mac: Towards moving CALayerTree to the browser proc

gpu/ipc/service/ca_layer_partial_damage_tree_mac.h

-// Copyright 2016 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 GPU_IPC_SERVICE_CA_LAYER_PARTIAL_DAMAGE_TREE_MAC_H_
-#define GPU_IPC_SERVICE_CA_LAYER_PARTIAL_DAMAGE_TREE_MAC_H_
-
-#include <IOSurface/IOSurface.h>
-#include <QuartzCore/QuartzCore.h>
-
-#include <deque>
-#include <memory>
-
-#include "base/mac/scoped_cftyperef.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/geometry/rect_f.h"
-
-namespace gpu {
-
-class CALayerPartialDamageTree {
- public:
-  CALayerPartialDamageTree(bool allow_partial_swap,
-                           base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
-                           const gfx::Rect& pixel_frame_rect);
-  ~CALayerPartialDamageTree();
-
-  base::ScopedCFTypeRef<IOSurfaceRef> RootLayerIOSurface();
-  void CommitCALayers(CALayer* superlayer,
-                      std::unique_ptr<CALayerPartialDamageTree> old_tree,
-                      float scale_factor,
-                      const gfx::Rect& pixel_damage_rect);
-
- private:
-  class OverlayPlane;
-
-  // This will populate |partial_damage_planes_|, potentially re-using the
-  // CALayers and |partial_damage_planes_| from |old_tree|. After this function
-  // completes, the back() of |partial_damage_planes_| is the plane that will
-  // be updated this frame (and if it is empty, then the root plane will be
-  // updated).
-  void UpdatePartialDamagePlanes(CALayerPartialDamageTree* old_tree,
-                                 const gfx::Rect& pixel_damage_rect);
-
-  void UpdateRootAndPartialDamagePlanes(
-      std::unique_ptr<CALayerPartialDamageTree> old_tree,
-      const gfx::Rect& pixel_damage_rect);
-
-  void UpdateCALayers(CALayer* superlayer, float scale_factor);
-
-  const bool allow_partial_swap_;
-  std::unique_ptr<OverlayPlane> root_plane_;
-  std::deque<std::unique_ptr<OverlayPlane>> partial_damage_planes_;
-};
-
-}  // content
-
-#endif  // GPU_IPC_SERVICE_CA_LAYER_PARTIAL_DAMAGE_TREE_MAC_H_