Add layer name into frame viewer

cc/layers/heads_up_display_layer.cc

Index: cc/layers/heads_up_display_layer.cc
diff --git a/cc/layers/heads_up_display_layer.cc b/cc/layers/heads_up_display_layer.cc
index 92486cc851599a7b7a7b7bd7c4b3a741d4fd9dfa..e255d0d297308d653cb5ee08e7ff74debf6bd037 100644
--- a/cc/layers/heads_up_display_layer.cc
+++ b/cc/layers/heads_up_display_layer.cc
@@ -5,6 +5,7 @@
 #include "cc/layers/heads_up_display_layer.h"
 
 #include <algorithm>
+#include <string>
 
 #include "base/debug/trace_event.h"
 #include "cc/layers/heads_up_display_layer_impl.h"
@@ -30,6 +31,13 @@ void HeadsUpDisplayLayer::PrepareForCalculateDrawProperties(
   gfx::Transform matrix;
   matrix.MakeIdentity();
 
+  bool is_tracing;
+  TRACE_EVENT_CATEGORY_GROUP_ENABLED("cc", &is_tracing);
+  if (is_tracing)
+      SetDebugName("Heads Up Display Layer");
+  else
+      SetDebugName(std::string());
+
   if (layer_tree_host()->debug_state().ShowHudRects()) {
     int max_texture_size =
         layer_tree_host()->GetRendererCapabilities().max_texture_size;