tracing for RenderTextMac::GetDisplayText() eliding goo

ui/gfx/render_text_mac.cc

Index: ui/gfx/render_text_mac.cc
diff --git a/ui/gfx/render_text_mac.cc b/ui/gfx/render_text_mac.cc
index 5b7e2faeef3185316398b3ad3562204a338e8c69..b140af873b11f27e2300920a6198fe8e144f4e56 100644
--- a/ui/gfx/render_text_mac.cc
+++ b/ui/gfx/render_text_mac.cc
@@ -15,6 +15,8 @@
 #include "base/strings/sys_string_conversions.h"
 #include "skia/ext/skia_utils_mac.h"
 
+#include "base/debug/stack_trace.h"
+
 namespace gfx {
 
 RenderTextMac::RenderTextMac()
@@ -33,6 +35,7 @@ bool RenderTextMac::MultilineSupported() const {
 }
 
 const base::string16& RenderTextMac::GetDisplayText() {
+
   return text_elided() ? display_text() : layout_text();
 }
 
@@ -112,6 +115,7 @@ bool RenderTextMac::IsValidCursorIndex(size_t index) {
 }
 
 void RenderTextMac::OnLayoutTextAttributeChanged(bool text_changed) {
+  DLOG(INFO) << "OnLayoutTextAttributeChanged: " << GetDisplayText();
   //DCHECK(!multiline()) << "RenderTextMac does not support multi line";
   if (text_changed) {
     if (elide_behavior() != NO_ELIDE &&