tracing: remove sampling state profiler

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 971 matching lines @@
   ASSERT(m_frame->view() == this);
   ASSERT(m_frame->page());
 
   ScriptForbiddenScope forbidScript;
 
   if (isInPerformLayout() || shouldThrottleRendering() ||
       !m_frame->document()->isActive())
     return;
 
   TRACE_EVENT0("blink,benchmark", "FrameView::layout");
-  TRACE_EVENT_SCOPED_SAMPLING_STATE("blink", "Layout");
 
   if (m_autoSizeInfo)
     m_autoSizeInfo->autoSizeIfNeeded();
 
   m_hasPendingLayout = false;
   DocumentLifecycle::Scope lifecycleScope(lifecycle(),
                                           DocumentLifecycle::LayoutClean);
 
   TRACE_EVENT_BEGIN1("devtools.timeline", "Layout", "beginData",
                      InspectorLayoutEvent::beginData(this));
@@ skipping 3554 matching lines @@
 }
 
 bool FrameView::canThrottleRendering() const {
   if (!RuntimeEnabledFeatures::renderingPipelineThrottlingEnabled())
     return false;
   return m_subtreeThrottled ||
          (m_hiddenForThrottling && m_crossOriginForThrottling);
 }
 
 }  // namespace blink