Reenable framebusting deprecation, change it to allow navigation if iframe has ever had a user gestu

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 447 matching lines @@
                                    &Document::updateFocusAppearanceTimerFired),
       m_cssTarget(nullptr),
       m_loadEventProgress(LoadEventNotRun),
       m_startTime(currentTime()),
       m_scriptRunner(ScriptRunner::create(this)),
       m_xmlVersion("1.0"),
       m_xmlStandalone(StandaloneUnspecified),
       m_hasXMLDeclaration(0),
       m_designMode(false),
       m_isRunningExecCommand(false),
+      m_hasReceivedUserGesture(false),
       m_hasAnnotatedRegions(false),
       m_annotatedRegionsDirty(false),
       m_useSecureKeyboardEntryWhenActive(false),
       m_documentClasses(documentClasses),
       m_isViewSource(false),
       m_sawElementsInKnownNamespaces(false),
       m_isSrcdocDocument(false),
       m_isMobileDocument(false),
       m_layoutView(0),
       m_contextDocument(initializer.contextDocument()),
@@ skipping 2901 matching lines @@
     referrerDocument = frame->document();
   }
   return referrerDocument->m_url.strippedForUseAsReferrer();
 }
 
 MouseEventWithHitTestResults Document::performMouseEventHitTest(
     const HitTestRequest& request,
     const LayoutPoint& documentPoint,
     const PlatformMouseEvent& event) {
   DCHECK(layoutViewItem().isNull() || layoutViewItem().isLayoutView());
+  // TODO(japhet): UserGestureIndicator should setHasReceivedUserGesture()
+  // on the Document.
+  if (UserGestureIndicator::processingUserGesture())
+    m_hasReceivedUserGesture = true;
 
   // LayoutView::hitTest causes a layout, and we don't want to hit that until
   // the first layout because until then, there is nothing shown on the screen -
   // the user can't have intentionally clicked on something belonging to this
   // page.  Furthermore, mousemove events before the first layout should not
   // lead to a premature layout() happening, which could show a flash of white.
   // See also the similar code in EventHandler::hitTestResultAtPoint.
   if (layoutViewItem().isNull() || !view() || !view()->didFirstLayout())
     return MouseEventWithHitTestResults(event,
                                         HitTestResult(request, LayoutPoint()));
@@ skipping 2989 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