cc: Fork OverlayCandidate to CALayerOverlay

cc/output/overlay_strategy_all_or_nothing.cc

-// Copyright 2015 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.
-
-#include "cc/output/overlay_strategy_all_or_nothing.h"
-
-#include "cc/output/overlay_candidate_validator.h"
-#include "cc/quads/draw_quad.h"
-
-namespace cc {
-
-OverlayStrategyAllOrNothing::OverlayStrategyAllOrNothing(
-    OverlayCandidateValidator* capability_checker)
-    : capability_checker_(capability_checker) {
-  DCHECK(capability_checker);
-}
-
-OverlayStrategyAllOrNothing::~OverlayStrategyAllOrNothing() {}
-
-bool OverlayStrategyAllOrNothing::Attempt(ResourceProvider* resource_provider,
-                                          RenderPassList* render_passes,
-                                          OverlayCandidateList* candidates,
-                                          gfx::Rect* damage_rect) {
-  QuadList& quad_list = render_passes->back()->quad_list;
-  OverlayCandidateList new_candidates;
-  int next_z_order = -1;
-
-  for (const DrawQuad* quad : quad_list) {
-    OverlayCandidate candidate;
-    if (!OverlayCandidate::FromDrawQuad(resource_provider, quad, &candidate))
-      return false;
-    candidate.plane_z_order = next_z_order--;
-    new_candidates.push_back(candidate);
-  }
-
-  capability_checker_->CheckOverlaySupport(&new_candidates);
-  for (const OverlayCandidate& candidate : new_candidates) {
-    if (!candidate.overlay_handled)
-      return false;
-  }
-
-  quad_list.clear();
-  candidates->swap(new_candidates);
-  return true;
-}
-
-}  // namespace cc