Remove meta viewport and @viewport CSS rules.

sky/engine/core/css/parser/BisonCSSParser-in.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 881 matching lines @@
     if (m_context.useCounter())
         m_context.useCounter()->count(m_context, propertyID);
 
     setStyleSheet(contextStyleSheet);
 
     setupParser("@-internal-value ", string, "");
 
     m_id = propertyID;
     m_important = important;
 
-    {
-        StyleDeclarationScope scope(this, declaration);
-        cssyyparse(this);
-    }
+    cssyyparse(this);
 
     m_rule = nullptr;
     m_id = CSSPropertyInvalid;
 
     bool ok = false;
     if (!m_parsedProperties.isEmpty()) {
         ok = true;
         declaration->addParsedProperties(m_parsedProperties);
         clearProperties();
     }
@@ skipping 97 matching lines @@
 
     TemporaryChange<CSSParserObserver*> scopedObsever(m_observer, observer);
 
     setupParser("@-internal-decls ", string, "");
     if (m_observer) {
         m_observer->startRuleHeader(CSSRuleSourceData::STYLE_RULE, 0);
         m_observer->endRuleHeader(1);
         m_observer->startRuleBody(0);
     }
 
-    {
-        StyleDeclarationScope scope(this, declaration);
-        cssyyparse(this);
-    }
+    cssyyparse(this);
 
     m_rule = nullptr;
 
     bool ok = false;
     if (!m_parsedProperties.isEmpty()) {
         ok = true;
         declaration->addParsedProperties(m_parsedProperties);
         clearProperties();
     }
 
@@ skipping 837 matching lines @@
     if (m_observer)
         m_observer->endProperty(isImportantFound, isPropertyParsed, m_tokenizer.safeUserStringTokenOffset(), errorType);
 }
 
 void BisonCSSParser::startEndUnknownRule()
 {
     if (m_observer)
         m_observer->startEndUnknownRule();
 }
 
-StyleRuleBase* BisonCSSParser::createViewportRule()
-{
-    // Allow @viewport rules from UA stylesheets even if the feature is disabled.
-    if (!RuntimeEnabledFeatures::cssViewportEnabled() && !isUASheetBehavior(m_context.mode()))
-        return 0;
-
-    m_allowImportRules = m_allowNamespaceDeclarations = false;
-
-    RefPtrWillBeRawPtr<StyleRuleViewport> rule = StyleRuleViewport::create();
-
-    rule->setProperties(createStylePropertySet());
-    clearProperties();
-
-    StyleRuleViewport* result = rule.get();
-    m_parsedRules.append(rule.release());
-
-    return result;
 }
-
-}