Use LayerTreeHostImpl id instead of its address as id in trace events

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 29b3f9c8938c971e0e407f00b171c12baddbf47a..b3911f86ac186be311f4a8878bd179a1853fdd51 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -276,14 +276,14 @@ LayerTreeHostImpl::LayerTreeHostImpl(
   // LTHI always has an active tree.
   active_tree_ = LayerTreeImpl::create(this);
   TRACE_EVENT_OBJECT_CREATED_WITH_ID(
-      TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", this);
+      TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", id_);
 }
 
 LayerTreeHostImpl::~LayerTreeHostImpl() {
   DCHECK(proxy_->IsImplThread());
   TRACE_EVENT0("cc", "LayerTreeHostImpl::~LayerTreeHostImpl()");
   TRACE_EVENT_OBJECT_DELETED_WITH_ID(
-      TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", this);
+      TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", id_);
 
   if (input_handler_client_) {
     input_handler_client_->WillShutdown();
@@ -1448,9 +1448,11 @@ void LayerTreeHostImpl::DrawLayers(FrameData* frame,
   }
 
   TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(
-      TRACE_DISABLED_BY_DEFAULT("cc.debug") ","
-      TRACE_DISABLED_BY_DEFAULT("cc.debug.quads"), "cc::LayerTreeHostImpl",
-      this, TracedValue::FromValue(AsValueWithFrame(frame).release()));
+      TRACE_DISABLED_BY_DEFAULT("cc.debug") "," TRACE_DISABLED_BY_DEFAULT(
+          "cc.debug.quads"),
+      "cc::LayerTreeHostImpl",
+      id_,
+      TracedValue::FromValue(AsValueWithFrame(frame).release()));
 
   // Because the contents of the HUD depend on everything else in the frame, the
   // contents of its texture are updated as the last thing before the frame is