cc: Start using raster/eviction iterators.

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index 94b8bfa1cfac7e9daaa5cef94a4e41954d7a8880..771dbcf2112e71ee26dec6b3457f892bd5b615fb 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -45,6 +45,7 @@
 #include "cc/quads/shared_quad_state.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "cc/quads/texture_draw_quad.h"
+#include "cc/resources/eviction_tile_priority_queue.h"
 #include "cc/resources/gpu_raster_worker_pool.h"
 #include "cc/resources/image_copy_raster_worker_pool.h"
 #include "cc/resources/image_raster_worker_pool.h"
@@ -52,6 +53,7 @@
 #include "cc/resources/picture_layer_tiling.h"
 #include "cc/resources/pixel_buffer_raster_worker_pool.h"
 #include "cc/resources/prioritized_resource_manager.h"
+#include "cc/resources/raster_tile_priority_queue.h"
 #include "cc/resources/raster_worker_pool.h"
 #include "cc/resources/resource_pool.h"
 #include "cc/resources/texture_mailbox_deleter.h"
@@ -1263,7 +1265,8 @@ void LayerTreeHostImpl::DidInitializeVisibleTile() {
     client_->DidInitializeVisibleTileOnImplThread();
 }
 
-const std::vector<PictureLayerImpl*>& LayerTreeHostImpl::GetPictureLayers() {
+const std::vector<PictureLayerImpl*>& LayerTreeHostImpl::GetPictureLayers()
+    const {
   return picture_layers_;
 }
 
@@ -1289,6 +1292,16 @@ void LayerTreeHostImpl::NotifyTileStateChanged(const Tile* tile) {
   }
 }
 
+void LayerTreeHostImpl::BuildRasterQueue(RasterTilePriorityQueue* queue,
+                                         TreePriority tree_priority) {
+  queue->BuildQueue(picture_layers_, tree_priority);
+}
+
+void LayerTreeHostImpl::BuildEvictionQueue(EvictionTilePriorityQueue* queue,
+                                           TreePriority tree_priority) {
+  queue->BuildQueue(picture_layers_, tree_priority);
+}
+
 void LayerTreeHostImpl::SetMemoryPolicy(const ManagedMemoryPolicy& policy) {
   SetManagedMemoryPolicy(policy, zero_budget_);
 }