Add support for CSS unicod encoding to the text codec.

third_party/WebKit/Source/core/frame/FrameSerializer.cpp

Index: third_party/WebKit/Source/core/frame/FrameSerializer.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameSerializer.cpp b/third_party/WebKit/Source/core/frame/FrameSerializer.cpp
index 5c484d06037b3200e7475fa150c8dc3961025702..c7e08d0d9284b92e27b0647ed70539fc8a1bf58e 100644
--- a/third_party/WebKit/Source/core/frame/FrameSerializer.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameSerializer.cpp
@@ -329,7 +329,7 @@ void FrameSerializer::serializeCSSStyleSheet(CSSStyleSheet& styleSheet, const KU
         WTF::TextEncoding textEncoding(styleSheet.contents()->charset());
         ASSERT(textEncoding.isValid());
         String textString = cssText.toString();
-        CString text = textEncoding.encode(textString, WTF::EntitiesForUnencodables);
+        CString text = textEncoding.encode(textString, WTF::CSSEncodedEntitiesForUnencodables);
         m_resources->append(SerializedResource(url, String("text/css"), SharedBuffer::create(text.data(), text.length())));
         m_resourceURLs.add(url);
     }