Move some Document timers to frame-specific task runners.

third_party/WebKit/Source/core/dom/Document.h

 /*
  * 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, 2010, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 1583 matching lines @@
   LayoutView* m_layoutView;
 
   WeakMember<Document> m_contextDocument;
 
   // For early return in Fullscreen::fromIfExists()
   bool m_hasFullscreenSupplement;
 
   HeapVector<Member<Element>> m_topLayerElements;
 
   int m_loadEventDelayCount;
-  Timer<Document> m_loadEventDelayTimer;
-  Timer<Document> m_pluginLoadingTimer;
+  TaskRunnerTimer<Document> m_loadEventDelayTimer;
+  TaskRunnerTimer<Document> m_pluginLoadingTimer;
 
   ViewportDescription m_viewportDescription;
   ViewportDescription m_legacyViewportDescription;
   Length m_viewportDefaultMinWidth;
 
   ReferrerPolicy m_referrerPolicy;
 
   DocumentTiming m_documentTiming;
   Member<MediaQueryMatcher> m_mediaQueryMatcher;
   bool m_writeRecursionIsTooDeep;
@@ skipping 99 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif  // Document_h