cc: Make CallFunctionForEveryLayer use LayerListIterator

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index 60ad5f847b4b5c1c64cc554f61f667c6803f04d1..d6c4f3289b8d34ad3b91cd06f45b652147aa4b64 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -412,8 +412,7 @@ void LayerTreeHost::FinishCommitOnImplThread(LayerTreeHostImpl* host_impl) {
       frame_viewer_instrumentation::IsTracingLayerTreeSnapshots() &&
       root_layer()) {
     LayerTreeHostCommon::CallFunctionForEveryLayer(
-        this, [](Layer* layer) { layer->DidBeginTracing(); },
-        CallFunctionLayerType::ALL_LAYERS);
+        this, [](Layer* layer) { layer->DidBeginTracing(); });
   }
 
   LayerTreeImpl* sync_tree = host_impl->sync_tree();
@@ -1650,12 +1649,9 @@ void LayerTreeHost::FromProtobufForCommit(const proto::LayerTreeHost& proto) {
   // updated for other reasons. All layers that at this point are part of the
   // layer tree are valid, so it is OK that they have a valid sequence number.
   int seq_num = property_trees_.sequence_number;
-  LayerTreeHostCommon::CallFunctionForEveryLayer(
-      this,
-      [seq_num](Layer* layer) {
-        layer->set_property_tree_sequence_number(seq_num);
-      },
-      CallFunctionLayerType::ALL_LAYERS);
+  LayerTreeHostCommon::CallFunctionForEveryLayer(this, [seq_num](Layer* layer) {
+    layer->set_property_tree_sequence_number(seq_num);
+  });
 
   surface_id_namespace_ = proto.surface_id_namespace();
   next_surface_sequence_ = proto.next_surface_sequence();