Fix hard-coding of "about:srcdoc"

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.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 1436 matching lines @@
     }
 }
 
 bool FrameLoader::shouldTreatURLAsSameAsCurrent(const KURL& url) const
 {
     return m_currentItem && url == m_currentItem->url();
 }
 
 bool FrameLoader::shouldTreatURLAsSrcdocDocument(const KURL& url) const
 {
-    if (!equalIgnoringCase(url.string(), "about:srcdoc"))
+    if (!url.isAboutSrcdocURL())
         return false;
     HTMLFrameOwnerElement* ownerElement = m_frame->deprecatedLocalOwner();
     if (!isHTMLIFrameElement(ownerElement))
         return false;
     return ownerElement->fastHasAttribute(srcdocAttr);
 }
 
 void FrameLoader::dispatchDocumentElementAvailable()
 {
     client()->documentElementAvailable();
@@ skipping 78 matching lines @@
     // FIXME: We need a way to propagate insecure requests policy flags to
     // out-of-process frames. For now, we'll always use default behavior.
     if (!parentFrame->isLocalFrame())
         return nullptr;
 
     ASSERT(toLocalFrame(parentFrame)->document());
     return toLocalFrame(parentFrame)->document()->insecureNavigationsToUpgrade();
 }
 
 } // namespace blink