Renderer-side changes for NoState Prefetch

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.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 177 matching lines @@
 #include "core/layout/TextAutosizer.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/layout/compositing/PaintLayerCompositor.h"
 #include "core/loader/CookieJar.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/loader/FrameFetchContext.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "core/loader/ImageLoader.h"
 #include "core/loader/NavigationScheduler.h"
+#include "core/loader/PrerendererClient.h"
 #include "core/loader/appcache/ApplicationCacheHost.h"
 #include "core/observer/ResizeObserverController.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/EventWithHitTestResults.h"
 #include "core/page/FocusController.h"
 #include "core/page/FrameTree.h"
 #include "core/page/Page.h"
 #include "core/page/PointerLockController.h"
 #include "core/page/scrolling/ChildViewportScrollCallback.h"
 #include "core/page/scrolling/RootScrollerController.h"
@@ skipping 1112 matching lines @@
     if (!m_frame || !m_frame->page())
         return PageVisibilityStateHidden;
     // While visibilitychange is being dispatched during unloading it is
     // expected that the visibility is hidden regardless of the page's
     // visibility.
     if (m_loadEventProgress >= UnloadVisibilityChangeInProgress)
         return PageVisibilityStateHidden;
     return m_frame->page()->visibilityState();
 }
 
+bool Document::isPrefetchOnly() const
+{
+    if (!m_frame || !m_frame->page())
+        return false;
+
+    PrerendererClient* prerendererClient = PrerendererClient::from(m_frame->page());
+    return prerendererClient && prerendererClient->isPrefetchOnly();
+}
+
 String Document::visibilityState() const
 {
     return pageVisibilityStateString(pageVisibilityState());
 }
 
 bool Document::hidden() const
 {
     return pageVisibilityState() != PageVisibilityStateVisible;
 }
 
@@ skipping 1090 matching lines @@
 
 DocumentParser* Document::implicitOpen(ParserSynchronizationPolicy parserSyncPolicy)
 {
     detachParser();
 
     removeChildren();
     DCHECK(!m_focusedElement);
 
     setCompatibilityMode(NoQuirksMode);
 
-    if (!threadedParsingEnabledForTesting())
+    if (!threadedParsingEnabledForTesting()) {
         parserSyncPolicy = ForceSynchronousParsing;
+    } else if (parserSyncPolicy == AllowAsynchronousParsing && isPrefetchOnly()) {
+        // Prefetch must be synchronous.
+        parserSyncPolicy = ForceSynchronousParsing;
+    }
 
     m_parserSyncPolicy = parserSyncPolicy;
     m_parser = createParser();
     DocumentParserTiming::from(*this).markParserStart();
     setParsingState(Parsing);
     setReadyState(Loading);
 
     return m_parser;
 }
 
@@ skipping 3588 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