Add a trace event in FrameLoader::updateForSameDocumentNavigation.

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
@@ skipping 781 matching lines @@
   return allowed;
 }
 
 void FrameLoader::updateForSameDocumentNavigation(
     const KURL& newURL,
     SameDocumentNavigationSource sameDocumentNavigationSource,
     PassRefPtr<SerializedScriptValue> data,
     HistoryScrollRestorationType scrollRestorationType,
     FrameLoadType type,
     Document* initiatingDocument) {
+  TRACE_EVENT1("blink", "FrameLoader::updateForSameDocumentNavigation", "url",
+               newURL.getString().ascii().data());
   // Update the data source's request with the new URL to fake the URL change
   m_frame->document()->setURL(newURL);
   documentLoader()->setReplacesCurrentHistoryItem(type !=
                                                   FrameLoadTypeStandard);
   documentLoader()->updateForSameDocumentNavigation(
       newURL, sameDocumentNavigationSource);
 
   // Generate start and stop notifications only when loader is completed so that
   // we don't fire them for fragment redirection that happens in window.onload
   // handler. See https://bugs.webkit.org/show_bug.cgi?id=31838
@@ skipping 1163 matching lines @@
       frameLoadRequest.clientRedirect());
 
   loader->setLoadType(loadType);
   loader->setNavigationType(navigationType);
   loader->setReplacesCurrentHistoryItem(loadType ==
                                         FrameLoadTypeReplaceCurrentItem);
   return loader;
 }
 
 }  // namespace blink