Reland of "Tracking reference filter mutation via SVGElementProxy"

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 3024 matching lines @@
        child = child->tree().nextSibling()) {
     if (!child->isLocalFrame())
       continue;
     if (FrameView* view = toLocalFrame(child)->view())
       frameViews.append(view);
   }
 
   for (const auto& frameView : frameViews)
     frameView->updateStyleAndLayoutIfNeededRecursiveInternal();
 
-  checkDoesNotNeedLayout();
-
-  // When SVG filters are invalidated using
-  // Document::scheduleSVGFilterLayerUpdateHack() they may trigger an extra
-  // style recalc. See PaintLayer::filterNeedsPaintInvalidation().
-  if (m_frame->document()->hasSVGFilterElementsRequiringLayerUpdate()) {
-    m_frame->document()->updateStyleAndLayoutTree();
-
-    if (needsLayout())
-      layout();
-  }
-
   // These asserts ensure that parent frames are clean, when child frames
   // finished updating layout and style.
   checkDoesNotNeedLayout();
-  ASSERT(!m_frame->document()->hasSVGFilterElementsRequiringLayerUpdate());
 #if ENABLE(ASSERT)
   m_frame->document()->layoutView()->assertLaidOut();
 #endif
 
   updateWidgetGeometriesIfNeeded();
 
   if (lifecycle().state() < DocumentLifecycle::LayoutClean)
     lifecycle().advanceTo(DocumentLifecycle::LayoutClean);
 
   // Ensure that we become visually non-empty eventually.
@@ skipping 1507 matching lines @@
   DCHECK(m_frame->isMainFrame());
   return m_initialViewportSize.width();
 }
 
 int FrameView::initialViewportHeight() const {
   DCHECK(m_frame->isMainFrame());
   return m_initialViewportSize.height();
 }
 
 }  // namespace blink