cc: Split tiling set raster queues into all and required.

cc/resources/tiling_set_raster_queue.cc

Index: cc/resources/tiling_set_raster_queue.cc
diff --git a/cc/resources/tiling_set_raster_queue.cc b/cc/resources/tiling_set_raster_queue.cc
deleted file mode 100644
index 08f7642b8c55ed51921d49ccc462967f93971452..0000000000000000000000000000000000000000
--- a/cc/resources/tiling_set_raster_queue.cc
+++ /dev/null
@@ -1,117 +0,0 @@
-// 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.
-
-#include "cc/resources/tiling_set_raster_queue.h"
-
-namespace cc {
-
-TilingSetRasterQueue::TilingSetRasterQueue()
-    : tiling_set_(nullptr), current_stage_(arraysize(stages_)) {
-}
-
-TilingSetRasterQueue::TilingSetRasterQueue(PictureLayerTilingSet* tiling_set,
-                                           bool prioritize_low_res)
-    : tiling_set_(tiling_set), current_stage_(0) {
-  DCHECK(tiling_set_);
-
-  // Early out if the tiling set has no tilings.
-  if (!tiling_set_->num_tilings()) {
-    current_stage_ = arraysize(stages_);
-    return;
-  }
-
-  // Find high and low res tilings and initialize the iterators.
-  for (size_t i = 0; i < tiling_set_->num_tilings(); ++i) {
-    PictureLayerTiling* tiling = tiling_set_->tiling_at(i);
-    if (tiling->resolution() == HIGH_RESOLUTION) {
-      iterators_[HIGH_RES] =
-          PictureLayerTiling::TilingRasterTileIterator(tiling);
-    }
-
-    if (prioritize_low_res && tiling->resolution() == LOW_RESOLUTION) {
-      iterators_[LOW_RES] =
-          PictureLayerTiling::TilingRasterTileIterator(tiling);
-    }
-  }
-
-  if (prioritize_low_res) {
-    stages_[0].iterator_type = LOW_RES;
-    stages_[0].tile_type = TilePriority::NOW;
-
-    stages_[1].iterator_type = HIGH_RES;
-    stages_[1].tile_type = TilePriority::NOW;
-  } else {
-    stages_[0].iterator_type = HIGH_RES;
-    stages_[0].tile_type = TilePriority::NOW;
-
-    stages_[1].iterator_type = LOW_RES;
-    stages_[1].tile_type = TilePriority::NOW;
-  }
-
-  stages_[2].iterator_type = HIGH_RES;
-  stages_[2].tile_type = TilePriority::SOON;
-
-  stages_[3].iterator_type = HIGH_RES;
-  stages_[3].tile_type = TilePriority::EVENTUALLY;
-
-  IteratorType index = stages_[current_stage_].iterator_type;
-  TilePriority::PriorityBin tile_type = stages_[current_stage_].tile_type;
-  if (!iterators_[index] || iterators_[index].get_type() != tile_type)
-    AdvanceToNextStage();
-}
-
-TilingSetRasterQueue::~TilingSetRasterQueue() {
-}
-
-bool TilingSetRasterQueue::IsEmpty() const {
-  return current_stage_ >= arraysize(stages_);
-}
-
-void TilingSetRasterQueue::Pop() {
-  IteratorType index = stages_[current_stage_].iterator_type;
-  TilePriority::PriorityBin tile_type = stages_[current_stage_].tile_type;
-
-  // First advance the iterator.
-  DCHECK(iterators_[index]);
-  DCHECK(iterators_[index].get_type() == tile_type);
-  ++iterators_[index];
-
-  if (!iterators_[index] || iterators_[index].get_type() != tile_type)
-    AdvanceToNextStage();
-}
-
-Tile* TilingSetRasterQueue::Top() {
-  DCHECK(!IsEmpty());
-
-  IteratorType index = stages_[current_stage_].iterator_type;
-  DCHECK(iterators_[index]);
-  DCHECK(iterators_[index].get_type() == stages_[current_stage_].tile_type);
-
-  return *iterators_[index];
-}
-
-const Tile* TilingSetRasterQueue::Top() const {
-  DCHECK(!IsEmpty());
-
-  IteratorType index = stages_[current_stage_].iterator_type;
-  DCHECK(iterators_[index]);
-  DCHECK(iterators_[index].get_type() == stages_[current_stage_].tile_type);
-
-  return *iterators_[index];
-}
-
-void TilingSetRasterQueue::AdvanceToNextStage() {
-  DCHECK_LT(current_stage_, arraysize(stages_));
-  ++current_stage_;
-  while (current_stage_ < arraysize(stages_)) {
-    IteratorType index = stages_[current_stage_].iterator_type;
-    TilePriority::PriorityBin tile_type = stages_[current_stage_].tile_type;
-
-    if (iterators_[index] && iterators_[index].get_type() == tile_type)
-      break;
-    ++current_stage_;
-  }
-}
-
-}  // namespace cc