Revert of DevTools: do not use RAII for sync native breakpoints, reuse AsyncTask where possible.

third_party/WebKit/Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc.
  * All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
@@ skipping 2881 matching lines @@
 
 String Element::innerHTML() const {
   return createMarkup(this, ChildrenOnly);
 }
 
 String Element::outerHTML() const {
   return createMarkup(this);
 }
 
 void Element::setInnerHTML(const String& html, ExceptionState& exceptionState) {
-  InspectorInstrumentation::breakIfNeeded(&document(), "Element.setInnerHTML");
+  InspectorInstrumentation::NativeBreakpoint nativeBreakpoint(
+      &document(), "Element.setInnerHTML", true);
   if (DocumentFragment* fragment = createFragmentForInnerOuterHTML(
           html, this, AllowScriptingContent, "innerHTML", exceptionState)) {
     ContainerNode* container = this;
     if (isHTMLTemplateElement(*this))
       container = toHTMLTemplateElement(this)->content();
     replaceChildrenWithFragment(container, fragment, exceptionState);
   }
 }
 
 void Element::setOuterHTML(const String& html, ExceptionState& exceptionState) {
@@ skipping 1314 matching lines @@
 }
 
 DEFINE_TRACE_WRAPPERS(Element) {
   if (hasRareData()) {
     visitor->traceWrappers(elementRareData());
   }
   ContainerNode::traceWrappers(visitor);
 }
 
 }  // namespace blink