Decouple scheduling animation of webview plugins from layout.

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 2587 matching lines @@
     RELEASE_ASSERT(!needsLayout());
 
     // WebView plugins need to update regardless of whether the LayoutEmbeddedObject
     // that owns them needed layout.
     // TODO(leviw): This currently runs the entire lifecycle on plugin WebViews. We
     // should have a way to only run these other Documents to the same lifecycle stage
     // as this frame.
     const ChildrenWidgetSet* viewChildren = children();
     for (const RefPtrWillBeMember<Widget>& child : *viewChildren) {
         if ((*child).isPluginContainer())
-            toPluginView(child.get())->layoutIfNeeded();
+            toPluginView(child.get())->updateAllLifecyclePhases();
     }
 
     RELEASE_ASSERT(!needsLayout());
 
     // FIXME: Calling layout() shouldn't trigger script execution or have any
     // observable effects on the frame tree but we're not quite there yet.
     WillBeHeapVector<RefPtrWillBeMember<FrameView>> frameViews;
     for (Frame* child = m_frame->tree().firstChild(); child; child = child->tree().nextSibling()) {
         if (!child->isLocalFrame())
             continue;
@@ skipping 1495 matching lines @@
     return m_hiddenForThrottling && m_crossOriginForThrottling;
 }
 
 LayoutBox& FrameView::boxForScrollControlPaintInvalidation() const
 {
     ASSERT(layoutView());
     return *layoutView();
 }
 
 } // namespace blink