diff -r 000000000000 -r 6474c204b198 intl/uconv/ucvko/nsISO2022KRToUnicode.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intl/uconv/ucvko/nsISO2022KRToUnicode.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,66 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef nsISO2022KRToUnicode_h__
+#define nsISO2022KRToUnicode_h__
+#include "nsUCSupport.h"
+#include "mozilla/Telemetry.h"
+
+class nsISO2022KRToUnicode : public nsBasicDecoderSupport
+{
+public:
+  nsISO2022KRToUnicode()
+  { 
+    mState = mState_Init;
+    mLastLegalState = mState_ASCII;
+    mData = 0;
+    mEUCKRDecoder = nullptr;
+    mRunLength = 0;
+    mozilla::Telemetry::Accumulate(
+      mozilla::Telemetry::DECODER_INSTANTIATED_ISO2022KR, true);
+  }
+
+  virtual ~nsISO2022KRToUnicode()
+  {
+    NS_IF_RELEASE(mEUCKRDecoder);
+  }
+
+  NS_IMETHOD Convert(const char * aSrc, int32_t * aSrcLength,
+     char16_t * aDest, int32_t * aDestLength) ;
+  
+  NS_IMETHOD GetMaxLength(const char * aSrc, int32_t aSrcLength,
+     int32_t * aDestLength) 
+  {
+    *aDestLength = aSrcLength;
+    return NS_OK;
+  }
+
+  NS_IMETHOD Reset()
+  {
+    mState = mState_Init;
+    mLastLegalState = mState_ASCII;
+    mRunLength = 0;
+    return NS_OK;
+  }
+
+private:
+  enum {
+    mState_Init,
+    mState_ASCII,
+    mState_ESC,
+    mState_ESC_24,
+    mState_ESC_24_29,
+    mState_KSX1001_1992,
+    mState_KSX1001_1992_2ndbyte,
+    mState_ERROR
+  } mState, mLastLegalState;
+
+  uint8_t mData;
+
+  // Length of non-ASCII run
+  uint32_t mRunLength;
+
+  nsIUnicodeDecoder *mEUCKRDecoder;
+};
+#endif // nsISO2022KRToUnicode_h__