Fix tracing for Document::updateRenderTree

sky/engine/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 952 matching lines @@
     // tear down the render tree or (unfortunately) run script. Kill the whole renderer if
     // someone managed to get into here from inside layout or paint.
     RELEASE_ASSERT(!view()->isInPerformLayout());
     RELEASE_ASSERT(!view()->isPainting());
 
     // Script can run below in WidgetUpdates, so protect the LocalFrame.
     // FIXME: Can this still happen? How does script run inside
     // UpdateSuspendScope::performDeferredWidgetTreeOperations() ?
     RefPtr<LocalFrame> protect(m_frame);
 
-    TRACE_EVENT_BEGIN0("blink", "Document::updateRenderTree");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("blink", "UpdateRenderTree");
+    TRACE_EVENT0("blink", "Document::updateRenderTree");
 
     m_styleRecalcElementCounter = 0;
 
     DocumentAnimations::updateOutdatedAnimationPlayersIfNeeded(*this);
     evaluateMediaQueryListIfNeeded();
     updateDistributionIfNeeded();
 
     // FIXME: We should update style on our ancestor chain before proceeding
     // however doing so currently causes several tests to crash, as LocalFrame::setDocument calls Document::attach
     // before setting the LocalDOMWindow on the LocalFrame, or the SecurityOrigin on the document. The attach, in turn
@@ skipping 1230 matching lines @@
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (WeakDocumentSet::const_iterator it = set.begin(); it != set.end(); ++it) {
         fprintf(stderr, "- Document %p URL: %s\n", *it, (*it)->url().string().utf8().data());
     }
 }
 #endif