Set referrer for CSS resources

Source/core/css/CSSParserMode.h

Index: Source/core/css/CSSParserMode.h
diff --git a/Source/core/css/CSSParserMode.h b/Source/core/css/CSSParserMode.h
index 078b74f1930d8fe521492d16986aca9b490ec884..b379a68c77fab40e30041915e36ca9aca3ad1c5f 100644
--- a/Source/core/css/CSSParserMode.h
+++ b/Source/core/css/CSSParserMode.h
@@ -32,6 +32,7 @@
 #define CSSParserMode_h
 
 #include "platform/weborigin/KURL.h"
+#include "platform/weborigin/Referrer.h"
 
 namespace WebCore {
 
@@ -107,6 +108,7 @@ public:
     CSSParserMode mode() const { return m_mode; }
     const KURL& baseURL() const { return m_baseURL; }
     const String& charset() const { return m_charset; }
+    const Referrer& referrer() const { return m_referrer; }
     bool isHTMLDocument() const { return m_isHTMLDocument; }
 
     // This quirk is to maintain compatibility with Android apps built on
@@ -119,6 +121,7 @@ public:
     void setMode(CSSParserMode mode) { m_mode = mode; }
     void setBaseURL(const KURL& baseURL) { m_baseURL = baseURL; }
     void setCharset(const String& charset) { m_charset = charset; }
+    void setReferrer(const Referrer& referrer) { m_referrer = referrer; }
 
     KURL completeURL(const String& url) const;
 
@@ -128,6 +131,7 @@ private:
     KURL m_baseURL;
     String m_charset;
     CSSParserMode m_mode;
+    Referrer m_referrer;
     bool m_isHTMLDocument;
     bool m_useLegacyBackgroundSizeShorthandBehavior;