Reland of DocumentLoader should commit the load before creating a DocumentWriter

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 417 matching lines @@
         m_stateMachine.advanceTo(FrameLoaderStateMachine::CommittedMultipleRealLoads);
 
     client()->dispatchDidCommitLoad(m_currentItem.get(), historyCommitType);
 
     TRACE_EVENT1("devtools.timeline", "CommitLoad", "data", InspectorCommitLoadEvent::data(m_frame));
     InspectorInstrumentation::didCommitLoad(m_frame, m_documentLoader.get());
     m_frame->page()->didCommitLoad(m_frame);
     dispatchDidClearDocumentOfWindowObject();
 }
 
-void FrameLoader::didBeginDocument(bool dispatch)
+void FrameLoader::didInstallNewDocument(bool dispatchWindowObjectAvailable)
+{
+    ASSERT(m_frame);
+    ASSERT(m_frame->document());
+
+    m_frame->document()->setReadyState(Document::Loading);
+
+    if (dispatchWindowObjectAvailable)
+        dispatchDidClearDocumentOfWindowObject();
+
+    m_frame->document()->initContentSecurityPolicy(m_documentLoader ? m_documentLoader->releaseContentSecurityPolicy() : ContentSecurityPolicy::create());
+
+    if (m_provisionalItem && isBackForwardLoadType(m_loadType))
+        m_frame->document()->setStateForNewFormElements(m_provisionalItem->documentState());
+}
+
+void FrameLoader::didBeginDocument()
 {
     ASSERT(m_frame);
     ASSERT(m_frame->document());
     ASSERT(m_frame->document()->fetcher());
-    m_frame->document()->setReadyState(Document::Loading);
-
-    if (dispatch)
-        dispatchDidClearDocumentOfWindowObject();
-
-    m_frame->document()->initContentSecurityPolicy(m_documentLoader ? m_documentLoader->releaseContentSecurityPolicy() : ContentSecurityPolicy::create());
 
     if (m_documentLoader) {
         String suboriginHeader = m_documentLoader->response().httpHeaderField(HTTPNames::Suborigin);
         if (!suboriginHeader.isNull()) {
             Vector<String> messages;
             Suborigin suborigin;
             if (parseSuboriginHeader(suboriginHeader, &suborigin, messages))
                 m_frame->document()->enforceSuborigin(suborigin);
 
             for (auto& message : messages)
@@ skipping 16 matching lines @@
         String headerContentLanguage = m_documentLoader->response().httpHeaderField(HTTPNames::Content_Language);
         if (!headerContentLanguage.isEmpty()) {
             size_t commaIndex = headerContentLanguage.find(',');
             headerContentLanguage.truncate(commaIndex); // kNotFound == -1 == don't truncate
             headerContentLanguage = headerContentLanguage.stripWhiteSpace(isHTMLSpace<UChar>);
             if (!headerContentLanguage.isEmpty())
                 m_frame->document()->setContentLanguage(AtomicString(headerContentLanguage));
         }
     }
 
-    if (m_provisionalItem && isBackForwardLoadType(m_loadType))
-        m_frame->document()->setStateForNewFormElements(m_provisionalItem->documentState());
-
     client()->didCreateNewDocument();
 }
 
 void FrameLoader::finishedParsing()
 {
     if (m_stateMachine.creatingInitialEmptyDocument())
         return;
 
     m_progressTracker->finishedParsing();
 
@@ skipping 1066 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