cc: Move gpu rasterization flag from LayerImpl to LayerTreeImpl.

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 9797c974b27798cd7a65185f67220914cb8220ad..bf37c5139d20b2e866efe99ebd520aa06dd0661d 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -1806,12 +1806,11 @@ int LayerTreeHostImpl::memory_allocation_priority_cutoff() const {
 }
 
 void LayerTreeHostImpl::ReleaseTreeResources() {
-  if (active_tree_->root_layer())
-    SendReleaseResourcesRecursive(active_tree_->root_layer());
-  if (pending_tree_ && pending_tree_->root_layer())
-    SendReleaseResourcesRecursive(pending_tree_->root_layer());
-  if (recycle_tree_ && recycle_tree_->root_layer())
-    SendReleaseResourcesRecursive(recycle_tree_->root_layer());
+  active_tree_->ReleaseResources();
+  if (pending_tree_)
+    pending_tree_->ReleaseResources();
+  if (recycle_tree_)
+    recycle_tree_->ReleaseResources();
 
   EvictAllUIResources();
 }
@@ -2883,17 +2882,6 @@ base::TimeDelta LayerTreeHostImpl::LowFrequencyAnimationInterval() const {
   return base::TimeDelta::FromSeconds(1);
 }
 
-void LayerTreeHostImpl::SendReleaseResourcesRecursive(LayerImpl* current) {
-  DCHECK(current);
-  current->ReleaseResources();
-  if (current->mask_layer())
-    SendReleaseResourcesRecursive(current->mask_layer());
-  if (current->replica_layer())
-    SendReleaseResourcesRecursive(current->replica_layer());
-  for (size_t i = 0; i < current->children().size(); ++i)
-    SendReleaseResourcesRecursive(current->children()[i]);
-}
-
 std::string LayerTreeHostImpl::LayerTreeAsJson() const {
   std::string str;
   if (active_tree_->root_layer()) {