Remove CFX_{Byte,Wide}String::ConvertFrom().

core/include/fxcrt/fx_string.h

Index: core/include/fxcrt/fx_string.h
diff --git a/core/include/fxcrt/fx_string.h b/core/include/fxcrt/fx_string.h
index 36eba8d1c19583af44eb43c4f648b30805eb31aa..c625bfa9258247f5da4357e53677176eeb809c47 100644
--- a/core/include/fxcrt/fx_string.h
+++ b/core/include/fxcrt/fx_string.h
@@ -289,8 +289,6 @@ class CFX_ByteString {
 
   CFX_WideString UTF8Decode() const;
 
-  void ConvertFrom(const CFX_WideString& str, CFX_CharMap* pCharMap = NULL);
-
   FX_DWORD GetID(FX_STRSIZE start_pos = 0) const;
 
 #define FXFORMAT_SIGNED 1
@@ -561,7 +559,10 @@ class CFX_WideString {
 
   ~CFX_WideString();
 
-  static CFX_WideString FromLocal(const char* str, FX_STRSIZE len = -1);
+  static CFX_WideString FromLocal(const CFX_ByteString& str);
+
+  static CFX_WideString FromCodePage(const CFX_ByteString& str,
+                                     FX_WORD codepage);
 
   static CFX_WideString FromUTF8(const char* str, FX_STRSIZE len);
 
@@ -685,8 +686,6 @@ class CFX_WideString {
 
   CFX_ByteString UTF16LE_Encode() const;
 
-  void ConvertFrom(const CFX_ByteString& str, CFX_CharMap* pCharMap = NULL);
-
  protected:
   class StringData {
    public: