Introduce :-internal-shadow-host-has-appearance pseudo class, and apply it to METER element.

third_party/WebKit/Source/core/html/HTMLMeterElement.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 12 matching lines @@
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/HTMLNames.h"
 #include "core/dom/NodeComputedStyle.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/frame/UseCounter.h"
 #include "core/html/HTMLContentElement.h"
 #include "core/html/HTMLDivElement.h"
 #include "core/html/parser/HTMLParserIdioms.h"
-#include "core/html/shadow/AppearanceSwitchElement.h"
 #include "core/layout/LayoutObject.h"
 #include "core/style/ComputedStyle.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 
 HTMLMeterElement::HTMLMeterElement(Document& document)
     : LabelableElement(meterTag, document)
 {
@@ skipping 144 matching lines @@
 
 void HTMLMeterElement::didElementStateChange()
 {
     updateValueAppearance(valueRatio() * 100);
 }
 
 void HTMLMeterElement::didAddUserAgentShadowRoot(ShadowRoot& root)
 {
     ASSERT(!m_value);
 
-    AppearanceSwitchElement* inner = AppearanceSwitchElement::create(document(), AppearanceSwitchElement::ShowIfHostHasAppearance);
+    HTMLDivElement* inner = HTMLDivElement::create(document());
     inner->setShadowPseudoId(AtomicString("-webkit-meter-inner-element"));
     root.appendChild(inner);
 
     HTMLDivElement* bar = HTMLDivElement::create(document());
     bar->setShadowPseudoId(AtomicString("-webkit-meter-bar"));
 
     m_value = HTMLDivElement::create(document());
     updateValueAppearance(0);
     bar->appendChild(m_value);
 
     inner->appendChild(bar);
 
-    AppearanceSwitchElement* fallback = AppearanceSwitchElement::create(document(), AppearanceSwitchElement::ShowIfHostHasNoAppearance);
+    HTMLDivElement* fallback = HTMLDivElement::create(document());
     fallback->appendChild(HTMLContentElement::create(document()));
+    fallback->setShadowPseudoId(AtomicString("-internal-fallback"));
     root.appendChild(fallback);
 }
 
 void HTMLMeterElement::updateValueAppearance(double percentage)
 {
     DEFINE_STATIC_LOCAL(AtomicString, optimumPseudoId, ("-webkit-meter-optimum-value"));
     DEFINE_STATIC_LOCAL(AtomicString, suboptimumPseudoId, ("-webkit-meter-suboptimum-value"));
     DEFINE_STATIC_LOCAL(AtomicString, evenLessGoodPseudoId, ("-webkit-meter-even-less-good-value"));
 
     m_value->setInlineStyleProperty(CSSPropertyWidth, percentage, CSSPrimitiveValue::UnitType::Percentage);
@@ skipping 16 matching lines @@
     return computedStyle() && !computedStyle()->hasAppearance();
 }
 
 DEFINE_TRACE(HTMLMeterElement)
 {
     visitor->trace(m_value);
     LabelableElement::trace(visitor);
 }
 
 } // namespace blink