Incorrect setHasMediaQueries() when @media rule is dropped.

third_party/WebKit/Source/core/css/StyleSheetContents.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2012 Apple Inc. All rights reserved.
  *
  * 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,
@@ skipping 219 matching lines @@
         m_importRules.insert(index, importRule);
         m_importRules[index]->setParentStyleSheet(this);
         m_importRules[index]->requestStyleSheet();
         // FIXME: Stylesheet doesn't actually change meaningfully before the imported sheets are loaded.
         return true;
     }
     // Inserting @import rule after a non-import rule is not allowed.
     if (rule->isImportRule())
         return false;
 
-    if (rule->isMediaRule())
-        setHasMediaQueries();
-
     index -= m_importRules.size();
 
     if (index < m_namespaceRules.size() || (index == m_namespaceRules.size() && rule->isNamespaceRule())) {
         // Inserting non-namespace rules other than import rule before @namespace is not allowed.
         if (!rule->isNamespaceRule())
             return false;
         // Inserting @namespace rule when rules other than import/namespace/charset are present is not allowed.
         if (!m_childRules.isEmpty())
             return false;
 
         StyleRuleNamespace* namespaceRule = toStyleRuleNamespace(rule.get());
         m_namespaceRules.insert(index, namespaceRule);
         // For now to be compatible with IE and Firefox if namespace rule with same prefix is added
         // irrespective of adding the rule at any index, last added rule's value is considered.
         // TODO (ramya.v@samsung.com): As per spec last valid rule should be considered,
         // which means if namespace rule is added in the middle of existing namespace rules,
         // rule which comes later in rule list with same prefix needs to be considered.
         parserAddNamespace(namespaceRule->prefix(), namespaceRule->uri());
         return true;
     }
 
     if (rule->isNamespaceRule())
         return false;
 
     index -= m_namespaceRules.size();
 
-    if (rule->isFontFaceRule())
+    if (rule->isMediaRule())
+        setHasMediaQueries();
+    else if (rule->isFontFaceRule())
         setHasFontFaceRule(true);
+
     m_childRules.insert(index, rule);
     return true;
 }
 
 bool StyleSheetContents::wrapperDeleteRule(unsigned index)
 {
     ASSERT(m_isMutable);
     ASSERT_WITH_SECURITY_IMPLICATION(index < ruleCount());
 
     if (index < m_importRules.size()) {
@@ skipping 388 matching lines @@
     visitor->trace(m_importRules);
     visitor->trace(m_namespaceRules);
     visitor->trace(m_childRules);
     visitor->trace(m_loadingClients);
     visitor->trace(m_completedClients);
     visitor->trace(m_ruleSet);
 #endif
 }
 
 } // namespace blink