WIP: Give developers an opt-in mechanism to block some parser-inserted scripts.

third_party/WebKit/Source/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.
@@ skipping 438 matching lines @@
       m_xmlVersion("1.0"),
       m_xmlStandalone(StandaloneUnspecified),
       m_hasXMLDeclaration(0),
       m_designMode(false),
       m_isRunningExecCommand(false),
       m_hasAnnotatedRegions(false),
       m_annotatedRegionsDirty(false),
       m_documentClasses(documentClasses),
       m_isViewSource(false),
       m_sawElementsInKnownNamespaces(false),
-      m_isSrcdocDocument(false),
+      m_srcdocType(NotSrcdoc),
       m_isMobileDocument(false),
-      m_isFragmentParserCreatedSrcdoc(false),
       m_layoutView(0),
       m_contextDocument(initializer.contextDocument()),
       m_hasFullscreenSupplement(false),
       m_loadEventDelayCount(0),
       m_loadEventDelayTimer(TaskRunnerHelper::get(TaskType::Networking, this),
                             this,
                             &Document::loadEventDelayTimerFired),
       m_pluginLoadingTimer(
           TaskRunnerHelper::get(TaskType::UnspecedLoading, this),
           this,
@@ skipping 5002 matching lines @@
         getSecurityOrigin()->grantUniversalAccess();
       } else if (!settings->getAllowFileAccessFromFileURLs()) {
         // Some clients do not want local URLs to have access to other local
         // URLs.
         getSecurityOrigin()->blockLocalAccessFromLocalOrigin();
       }
     }
   }
 
   if (initializer.shouldTreatURLAsSrcdocDocument()) {
-    m_isSrcdocDocument = true;
+    m_srcdocType = Srcdoc;
     setBaseURLOverride(initializer.parentBaseURL());
 
     if (Element* owner = domWindow()->frameElement()) {
       HTMLIFrameElement* iframe = toHTMLIFrameElement(owner);
-      m_isFragmentParserCreatedSrcdoc =
-          iframe->createdByFragmentParser() ||
-          iframe->document().isFragmentParserCreatedSrcdoc();
+      if (iframe->createdByFragmentParser() ||
+          iframe->document().isFragmentParserCreatedSrcdoc()) {
+        m_srcdocType = FragmentParserCreatedSrcdoc;
+      } else if (iframe->createdByDocumentWrite() ||
+                 iframe->document().isDocumentWriteCreatedSrcdoc()) {
+        m_srcdocType = DocumentWriteCreatedSrcdoc;
+      }
     }
   }
 
   if (getSecurityOrigin()->isUnique() &&
       SecurityOrigin::create(m_url)->isPotentiallyTrustworthy())
     getSecurityOrigin()->setUniqueOriginIsPotentiallyTrustworthy(true);
 
   if (getSecurityOrigin()->hasSuborigin())
     enforceSuborigin(*getSecurityOrigin()->suborigin());
 }
@@ skipping 1041 matching lines @@
 }
 
 void showLiveDocumentInstances() {
   WeakDocumentSet& set = liveDocumentSet();
   fprintf(stderr, "There are %u documents currently alive:\n", set.size());
   for (Document* document : set)
     fprintf(stderr, "- Document %p URL: %s\n", document,
             document->url().getString().utf8().data());
 }
 #endif