Devirtualize several inspector classes destructors

Source/core/inspector/InspectorStyleSheet.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 490 matching lines @@
 
 InspectorStyle::InspectorStyle(const InspectorCSSId& styleId, PassRefPtr<CSSStyleDeclaration> style, InspectorStyleSheet* parentStyleSheet)
     : m_styleId(styleId)
     , m_style(style)
     , m_parentStyleSheet(parentStyleSheet)
     , m_formatAcquired(false)
 {
     ASSERT(m_style);
 }
 
-InspectorStyle::~InspectorStyle()
-{
-}
-
 PassRefPtr<TypeBuilder::CSS::CSSStyle> InspectorStyle::buildObjectForStyle() const
 {
     RefPtr<TypeBuilder::CSS::CSSStyle> result = styleWithProperties();
     if (!m_styleId.isEmpty())
         result->setStyleId(m_styleId.asProtocolValue<TypeBuilder::CSS::CSSStyleId>());
 
     result->setWidth(m_style->getPropertyValue("width"));
     result->setHeight(m_style->getPropertyValue("height"));
 
     RefPtr<CSSRuleSourceData> sourceData = extractSourceData();
@@ skipping 1294 matching lines @@
 
     RefPtr<MutableStylePropertySet> tempDeclaration = MutableStylePropertySet::create();
     RuleSourceDataList ruleSourceDataResult;
     StyleSheetHandler handler(m_styleText, &m_element->document(), m_element->document().elementSheet()->contents(), &ruleSourceDataResult);
     createCSSParser(&m_element->document())->parseDeclaration(tempDeclaration.get(), m_styleText, &handler, m_element->document().elementSheet()->contents());
     return ruleSourceDataResult.first().release();
 }
 
 } // namespace WebCore