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

cc/resources/tile_manager.cc

Index: cc/resources/tile_manager.cc
diff --git a/cc/resources/tile_manager.cc b/cc/resources/tile_manager.cc
index a6693529fc1dda2fedf6e4e4fe38bd0f09af97bd..824dca9ee2388f6978afe5a3b4ff7970f6f2bc89 100644
--- a/cc/resources/tile_manager.cc
+++ b/cc/resources/tile_manager.cc
@@ -558,8 +558,11 @@ void TileManager::AssignGpuMemoryToTiles(
                            resource_pool_->acquired_resource_count());
 
   eviction_priority_queue_is_up_to_date_ = false;
+  // TODO(vmpstr): Take this as a parameter and have SynchronousRaster build a
+  // REQUIRED_FOR_DRAW queue.
   client_->BuildRasterQueue(&raster_priority_queue_,
-                            global_state_.tree_priority);
+                            global_state_.tree_priority,
+                            RasterTilePriorityQueue::Type::ALL);
 
   while (!raster_priority_queue_.IsEmpty()) {
     Tile* tile = raster_priority_queue_.Top();
@@ -858,6 +861,8 @@ bool TileManager::IsReadyToActivate() const {
   TRACE_EVENT0("cc", "TileManager::IsReadyToActivate");
   const std::vector<PictureLayerImpl*>& layers = client_->GetPictureLayers();
 
+  // TODO(vmpstr): Replace this with building a REQUIRED_TO_ACTIVATE raster
+  // queue and checking if it's empty.
   for (const auto& layer : layers) {
     if (!layer->AllTilesRequiredForActivationAreReadyToDraw())
       return false;
@@ -869,6 +874,8 @@ bool TileManager::IsReadyToActivate() const {
 bool TileManager::IsReadyToDraw() const {
   const std::vector<PictureLayerImpl*>& layers = client_->GetPictureLayers();
 
+  // TODO(vmpstr): Replace this with building a REQUIRED_TO_DRAW raster queue
+  // and checking if it's empty.
   for (const auto& layer : layers) {
     if (!layer->AllTilesRequiredForDrawAreReadyToDraw())
       return false;
@@ -957,8 +964,10 @@ void TileManager::CheckIfMoreTilesNeedToBePrepared() {
   // ensures that we activate even when OOM. Note that we have to rebuilt the
   // queue in case the last AssignGpuMemoryToTiles evicted some tiles that
   // would otherwise not be picked up by the old raster queue.
+  // TODO(vmpstr): Make this use REQUIRED_FOR_ACTIVAITON queue.
   client_->BuildRasterQueue(&raster_priority_queue_,
-                            global_state_.tree_priority);
+                            global_state_.tree_priority,
+                            RasterTilePriorityQueue::Type::ALL);
   bool ready_to_activate = true;
   while (!raster_priority_queue_.IsEmpty()) {
     Tile* tile = raster_priority_queue_.Top();