METER with -webkit-appearance:none should be rendered with the normal CSS way.

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.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 1855 matching lines @@
 
     if (needsFullLayoutTreeUpdate() || node.needsStyleRecalc() || node.needsStyleInvalidation())
         return true;
     for (const ContainerNode* ancestor = LayoutTreeBuilderTraversal::parent(node); ancestor; ancestor = LayoutTreeBuilderTraversal::parent(*ancestor)) {
         if (ancestor->needsStyleRecalc() || ancestor->needsStyleInvalidation() || ancestor->needsAdjacentStyleRecalc())
             return true;
     }
     return false;
 }
 
-void Document::updateLayoutTreeForNode(Node* node)
+void Document::updateLayoutTreeForNode(const Node* node)
 {
     DCHECK(node);
     if (!needsLayoutTreeUpdateForNode(*node))
         return;
     updateLayoutTree();
 }
 
 void Document::updateLayoutIgnorePendingStylesheetsForNode(Node* node)
 {
     DCHECK(node);
@@ skipping 4087 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     Document::WeakDocumentSet& set = Document::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