Revert of Deprecate 'intrinsic' and 'min-intrinsic' CSS keywords

Source/core/css/CSSKeyframesRule.cpp

Index: Source/core/css/CSSKeyframesRule.cpp
diff --git a/Source/core/css/CSSKeyframesRule.cpp b/Source/core/css/CSSKeyframesRule.cpp
index 85e2e72a2db587761d5fab65223d68cb041fd12c..ea44a94b856fae90010e410dab69731f1ed784ba 100644
--- a/Source/core/css/CSSKeyframesRule.cpp
+++ b/Source/core/css/CSSKeyframesRule.cpp
@@ -30,7 +30,6 @@
 #include "core/css/CSSRuleList.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/parser/CSSParser.h"
-#include "core/dom/Document.h"
 #include "core/frame/UseCounter.h"
 #include "wtf/text/StringBuilder.h"
 
@@ -123,8 +122,7 @@
     ASSERT(m_childRuleCSSOMWrappers.size() == m_keyframesRule->keyframes().size());
 
     CSSStyleSheet* styleSheet = parentStyleSheet();
-    Document* doc = styleSheet ? styleSheet->ownerDocument() : 0;
-    CSSParserContext context(parserContext(), doc ? doc->frame() : 0, UseCounter::getFrom(styleSheet));
+    CSSParserContext context(parserContext(), UseCounter::getFrom(styleSheet));
     RefPtrWillBeRawPtr<StyleRuleKeyframe> keyframe = CSSParser::parseKeyframeRule(context, ruleText);
     if (!keyframe)
         return;