add INTL_GetCharSetID from 4.5 tree

include/libi18n.h

@@ -2692,6 +2692,30 @@ INTL_ResourceCharSet(void);
 /*@}*/
 /*=======================================================*/
 
+
+/* Definition for the charset ID selector. 
+ */ 
+typedef enum { 
+    INTL_FileNameCsidSel = 1, 
+    INTL_DefaultTextWidgetCsidSel = 2 
+} INTL_CharSetID_Selector; 
+
+/* Typedef for charset ID. 
+ */ 
+typedef int16 INTLCharSetID; 
+
+/** 
+ * Get charset ID using a given selector. 
+ * 
+ * Using a given selector, this returns a charset ID. 
+ * Designed to retrieve a non-context dependent charset ID (e.g file system). 
+ * 
+ * @param     selector    Specification for a charset ID to get. 
+ * @return Charset ID for the input selector. Returns CS_DEFUALT in case of error (e.g. selector invalid). 
+ */ 
+
+INTLCharSetID INTL_GetCharSetID(INTL_CharSetID_Selector selector); 
+
 XP_END_PROTOS
 
 #endif /* INTL_LIBI18N_H */

lib/libi18n/fe_ccc.c

@@ -1374,3 +1374,9 @@ void INTL_SetCCCCvtflag_SendHankakuKana(CCCDataObject obj, XP_Bool flag)
 	}
 }
 #endif  /* MOZ_MAIL_NEWS */
+
+
+INTLCharSetID INTL_GetCharSetID(INTL_CharSetID_Selector selector) 
+{ 
+ return FE_GetCharSetID(selector); 
+}