CSP 1.1: Revert CSSOM changes.

Source/core/css/CSSGroupingRule.cpp

Index: Source/core/css/CSSGroupingRule.cpp
diff --git a/Source/core/css/CSSGroupingRule.cpp b/Source/core/css/CSSGroupingRule.cpp
index 768f795b455d36b5d54217e74603ffc834614e24..96dce1522d7406ae10aa9c99a4c4d6eec2c90769 100644
--- a/Source/core/css/CSSGroupingRule.cpp
+++ b/Source/core/css/CSSGroupingRule.cpp
@@ -35,9 +35,7 @@
 #include "core/css/parser/BisonCSSParser.h"
 #include "core/css/CSSRuleList.h"
 #include "core/css/CSSStyleSheet.h"
-#include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
-#include "core/frame/ContentSecurityPolicy.h"
 #include "core/frame/UseCounter.h"
 #include "wtf/text/StringBuilder.h"
 
@@ -63,21 +61,12 @@ unsigned CSSGroupingRule::insertRule(const String& ruleString, unsigned index, E
 {
     ASSERT(m_childRuleCSSOMWrappers.size() == m_groupRule->childRules().size());
 
-    CSSStyleSheet* styleSheet = parentStyleSheet();
-    if (styleSheet) {
-        if (Document* document = styleSheet->ownerDocument()) {
-            if (!document->contentSecurityPolicy()->allowStyleEval()) {
-                exceptionState.throwSecurityError(document->contentSecurityPolicy()->styleEvalDisabledErrorMessage());
-                return 0;
-            }
-        }
-    }
-
     if (index > m_groupRule->childRules().size()) {
         exceptionState.throwDOMException(IndexSizeError, "the index " + String::number(index) + " must be less than or equal to the length of the rule list.");
         return 0;
     }
 
+    CSSStyleSheet* styleSheet = parentStyleSheet();
     CSSParserContext context(parserContext(), UseCounter::getFrom(styleSheet));
     BisonCSSParser parser(context);
     RefPtr<StyleRuleBase> newRule = parser.parseRule(styleSheet ? styleSheet->contents() : 0, ruleString);