DevTools: allow injecting CSS rules without breaking styles sidebar.

Source/core/css/parser/CSSParser.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/css/parser/CSSParser.h"
 
 #include "core/css/CSSKeyframeRule.h"
 #include "core/css/StyleColor.h"
 #include "core/css/StylePropertySet.h"
@@ skipping 28 matching lines @@
 PassRefPtrWillBeRawPtr<StyleRuleBase> CSSParser::parseRule(const CSSParserContext& context, const String& rule)
 {
     return CSSParserImpl::parseRule(rule, context, CSSParserImpl::AllowImportRules);
 }
 
 void CSSParser::parseSheet(const CSSParserContext& context, StyleSheetContents* styleSheet, const String& text)
 {
     return CSSParserImpl::parseStyleSheet(text, context, styleSheet);
 }
 
-void CSSParser::parseSheetForInspector(const CSSParserContext& context, const String& text, CSSParserObserver& observer)
+void CSSParser::parseSheetForInspector(const CSSParserContext& context, StyleSheetContents* styleSheet, const String& text, CSSParserObserver& observer)
 {
-    return CSSParserImpl::parseStyleSheetForInspector(text, context, observer);
+    return CSSParserImpl::parseStyleSheetForInspector(text, context, styleSheet, observer);
 }
 
 bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID unresolvedProperty, const String& string, bool important, CSSParserMode parserMode, StyleSheetContents* styleSheet)
 {
     if (string.isEmpty())
         return false;
     CSSPropertyID resolvedProperty = resolveCSSPropertyID(unresolvedProperty);
     RefPtrWillBeRawPtr<CSSValue> value = CSSParserFastPaths::maybeParseValue(resolvedProperty, string, parserMode);
     if (value)
         return declaration->setProperty(CSSProperty(resolvedProperty, value.release(), important));
@@ skipping 105 matching lines @@
     builder.appendLiteral(" : ");
     builder.append(propertyValue);
     builder.appendLiteral("; }");
     RefPtrWillBeRawPtr<StyleRuleBase> rule = parseRule(context, builder.toString());
     if (!rule || !rule->isFontFaceRule())
         return nullptr;
     return toStyleRuleFontFace(rule.get())->properties().getPropertyCSSValue(propertyID);
 }
 
 } // namespace blink