Modify the API of DoConversionFallBack and HandleFallBack to take UCS4 string, and handle surrogate pair properly. r= ftang, sr=blizzard git-svn-id: svn://10.0.0.236/trunk@128143 18797224-902f-48f8-a5cc-f745e15eee43
Modify the API of DoConversionFallBack and HandleFallBack to take UCS4 string, and handle surrogate pair properly. r= ftang, sr=blizzard git-svn-id: svn://10.0.0.236/trunk@128143 18797224-902f-48f8-a5cc-f745e15eee43