Prepare blink to unify definitions of load completion

Source/core/dom/ProcessingInstruction.cpp

 /*
  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 #include "core/dom/ProcessingInstruction.h"
 
 #include "core/FetchInitiatorTypeNames.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/MediaList.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/dom/Document.h"
+#include "core/dom/IncrementLoadEventDelayCount.h"
 #include "core/dom/StyleEngine.h"
 #include "core/fetch/CSSStyleSheetResource.h"
 #include "core/fetch/FetchRequest.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/fetch/XSLStyleSheetResource.h"
 #include "core/xml/XSLStyleSheet.h"
 #include "core/xml/parser/XMLDocumentParser.h" // for parseAttributes()
 
 namespace blink {
 
@@ skipping 172 matching lines @@
 
 void ProcessingInstruction::setXSLStyleSheet(const String& href, const KURL& baseURL, const String& sheet)
 {
     if (!inDocument()) {
         ASSERT(!m_sheet);
         return;
     }
 
     ASSERT(m_isXSL);
     m_sheet = XSLStyleSheet::create(this, href, baseURL);
+    OwnPtr<IncrementLoadEventDelayCount> delay = IncrementLoadEventDelayCount::create(document());

[Nate Chapin, 2014/09/15 23:39:34]

XSL stylesheet parsing should block the load event.

     parseStyleSheet(sheet);
 }
 
 void ProcessingInstruction::parseStyleSheet(const String& sheet)
 {
     if (m_isCSS)
         toCSSStyleSheet(m_sheet.get())->contents()->parseString(sheet);
     else if (m_isXSL)
         toXSLStyleSheet(m_sheet.get())->parseString(sheet);
 
@@ skipping 64 matching lines @@
     m_sheet.release()->clearOwnerNode();
 }
 
 void ProcessingInstruction::trace(Visitor* visitor)
 {
     visitor->trace(m_sheet);
     CharacterData::trace(visitor);
 }
 
 } // namespace