chrome/blink: Add functionality for in-product help for media elements.

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 2286 matching lines @@
   // beginFrame? This will catch the first layout in a page that does lots
   // of layout thrashing even though that layout might not be followed by
   // a paint for many seconds.
   if (IsRenderingReady() && body() &&
       !GetStyleEngine().HasPendingScriptBlockingSheets()) {
     if (!document_timing_.FirstLayout())
       document_timing_.MarkFirstLayout();
   }
 
   root_scroller_controller_->DidUpdateLayout();
+  if (GetFrame())
+    GetFrame()->LayoutUpdated();
 }
 
 void Document::ClearFocusedElementSoon() {
   if (!clear_focused_element_timer_.IsActive())
     clear_focused_element_timer_.StartOneShot(0, BLINK_FROM_HERE);
 }
 
 void Document::ClearFocusedElementTimerFired(TimerBase*) {
   UpdateStyleAndLayoutTree();
 
@@ skipping 4583 matching lines @@
 }
 
 void showLiveDocumentInstances() {
   WeakDocumentSet& set = liveDocumentSet();
   fprintf(stderr, "There are %u documents currently alive:\n", set.size());
   for (blink::Document* document : set)
     fprintf(stderr, "- Document %p URL: %s\n", document,
             document->Url().GetString().Utf8().data());
 }
 #endif