alternative tracing

ui/gfx/render_text_mac.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/render_text_mac.h"
 
 #include <ApplicationServices/ApplicationServices.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 99 matching lines @@
   // TODO(asvitkine): Implement this. http://crbug.com/131618
   return IsValidLogicalIndex(index);
 }
 
 void RenderTextMac::OnLayoutTextAttributeChanged(bool text_changed) {
   //DCHECK(!multiline()) << "RenderTextMac does not support multi line";
   if (text_changed) {
     if (elide_behavior() != NO_ELIDE &&
         elide_behavior() != FADE_TAIL &&
         !layout_text().empty()) {
+      DLOG(INFO) << "UPDATE DISP: " << GetContentWidth();
       UpdateDisplayText(GetContentWidth());
     } else {
       UpdateDisplayText(0);
     }
   }
   line_.reset();
   attributes_.reset();
   runs_.clear();
   runs_valid_ = false;
 }
 
 void RenderTextMac::OnDisplayTextAttributeChanged() {
   OnLayoutTextAttributeChanged(true);
 }
 
 void RenderTextMac::EnsureLayout() {
   if (line_.get())
     return;
+
+  DLOG(INFO) << "EnsureLayout based on: " << GetDisplayText() << " elided=" << text_elided();
   runs_.clear();
   runs_valid_ = false;
 
   CTFontRef ct_font = base::mac::NSToCFCast(
       font_list().GetPrimaryFont().GetNativeFont());
 
   const void* keys[] = { kCTFontAttributeName };
   const void* values[] = { ct_font };
   base::ScopedCFTypeRef<CFDictionaryRef> attributes(
       CFDictionaryCreate(NULL,
@@ skipping 214 matching lines @@
     CTUnderlineStyle value = kCTUnderlineStyleNone;
     if (underline && CFNumberGetValue(underline, kCFNumberSInt32Type, &value))
       run->underline = (value == kCTUnderlineStyleSingle);
 
     run_origin.offset(run_width, 0);
   }
   runs_valid_ = true;
 }
 
 }  // namespace gfx