Deleted OS_WIN and all Windows specific files from base.

base/strings/sys_string_conversions.h

Index: base/strings/sys_string_conversions.h
diff --git a/base/strings/sys_string_conversions.h b/base/strings/sys_string_conversions.h
index 42f2389a8b15be11cf32587e683a31ebf01941bb..103c397820db26130f9a317eba1073a1d9fa55e1 100644
--- a/base/strings/sys_string_conversions.h
+++ b/base/strings/sys_string_conversions.h
@@ -38,20 +38,6 @@ BASE_EXPORT std::wstring SysUTF8ToWide(const StringPiece& utf8);
 BASE_EXPORT std::string SysWideToNativeMB(const std::wstring& wide);
 BASE_EXPORT std::wstring SysNativeMBToWide(const StringPiece& native_mb);
 
-// Windows-specific ------------------------------------------------------------
-
-#if defined(OS_WIN)
-
-// Converts between 8-bit and wide strings, using the given code page. The
-// code page identifier is one accepted by the Windows function
-// MultiByteToWideChar().
-BASE_EXPORT std::wstring SysMultiByteToWide(const StringPiece& mb,
-                                            uint32 code_page);
-BASE_EXPORT std::string SysWideToMultiByte(const std::wstring& wide,
-                                           uint32 code_page);
-
-#endif  // defined(OS_WIN)
-
 // Mac-specific ----------------------------------------------------------------
 
 #if defined(OS_MACOSX)