Load the table of visited links from database file asynchronously.

third_party/WebKit/Source/core/dom/VisitedLinkState.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 41 matching lines @@
     if (isHTMLAnchorElement(element))
         return toHTMLAnchorElement(element).visitedLinkHash();
     return visitedLinkHash(element.document().baseURL(), attribute.isNull() ? linkAttribute(element) : attribute);
 }
 
 VisitedLinkState::VisitedLinkState(const Document& document)
     : m_document(document)
 {
 }
 
-void VisitedLinkState::invalidateStyleForAllLinks()
+void VisitedLinkState::invalidateStyleForAllLinks(bool invalidateVisitedLinkHashes)
 {
     if (m_linksCheckedForVisitedState.isEmpty())
         return;
     for (Node& node : NodeTraversal::startsAt(document().firstChild())) {
-        if (node.isLink())
+        if (node.isLink()) {
+            if (invalidateVisitedLinkHashes && isHTMLAnchorElement(node))

[brettw, 2015/12/08 00:54:42]

Although I'm in the root-level owners file, I'm not really qualified to review
this code. Can you get a WebKit/DOM reviewer to look at this? I think it's all
trivial except for this one function, which is hopefully also trivial from their
perspective.

+                toHTMLAnchorElement(node).invalidateCachedVisitedLinkHash();
             node.setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::VisitedLink));
+        }
     }
 }
 
 void VisitedLinkState::invalidateStyleForLink(LinkHash linkHash)
 {
     if (!m_linksCheckedForVisitedState.contains(linkHash))
         return;
     for (Node& node : NodeTraversal::startsAt(document().firstChild())) {
         if (node.isLink() && linkHashForElement(toElement(node)) == linkHash)
             node.setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::VisitedLink));
@@ skipping 26 matching lines @@
 
     return InsideUnvisitedLink;
 }
 
 DEFINE_TRACE(VisitedLinkState)
 {
     visitor->trace(m_document);
 }
 
 } // namespace blink