diff -r 000000000000 -r 6474c204b198 extensions/universalchardet/src/base/nsSBCharSetProber.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extensions/universalchardet/src/base/nsSBCharSetProber.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,91 @@
+/* -*- 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 nsSingleByteCharSetProber_h__
+#define nsSingleByteCharSetProber_h__
+
+#include "nsCharSetProber.h"
+
+#define SAMPLE_SIZE 64
+#define SB_ENOUGH_REL_THRESHOLD  1024
+#define POSITIVE_SHORTCUT_THRESHOLD  (float)0.95
+#define NEGATIVE_SHORTCUT_THRESHOLD  (float)0.05
+#define SYMBOL_CAT_ORDER  250
+#define NUMBER_OF_SEQ_CAT 4
+#define POSITIVE_CAT   (NUMBER_OF_SEQ_CAT-1)
+#define NEGATIVE_CAT   0
+
+typedef struct
+{
+  const unsigned char* const charToOrderMap;    // [256] table use to find a char's order
+  const uint8_t* const precedenceMatrix;  // [SAMPLE_SIZE][SAMPLE_SIZE]; table to find a 2-char sequence's frequency
+  float  mTypicalPositiveRatio;     // = freqSeqs / totalSeqs 
+  bool keepEnglishLetter;         // says if this script contains English characters (not implemented)
+  const char* const charsetName;
+} SequenceModel;
+
+
+class nsSingleByteCharSetProber : public nsCharSetProber{
+public:
+  nsSingleByteCharSetProber(const SequenceModel *model) 
+    :mModel(model), mReversed(false), mNameProber(0) { Reset(); }
+  nsSingleByteCharSetProber(const SequenceModel *model, bool reversed, nsCharSetProber* nameProber)
+    :mModel(model), mReversed(reversed), mNameProber(nameProber) { Reset(); }
+
+  virtual const char* GetCharSetName();
+  virtual nsProbingState HandleData(const char* aBuf, uint32_t aLen);
+  virtual nsProbingState GetState(void) {return mState;}
+  virtual void      Reset(void);
+  virtual float     GetConfidence(void);
+  
+  // This feature is not implemented yet. any current language model
+  // contain this parameter as false. No one is looking at this
+  // parameter or calling this method.
+  // Moreover, the nsSBCSGroupProber which calls the HandleData of this
+  // prober has a hard-coded call to FilterWithoutEnglishLetters which gets rid
+  // of the English letters.
+  bool KeepEnglishLetters() {return mModel->keepEnglishLetter;} // (not implemented)
+
+#ifdef DEBUG_chardet
+  virtual void  DumpStatus();
+#endif
+
+protected:
+  nsProbingState mState;
+  const SequenceModel* const mModel;
+  const bool mReversed; // true if we need to reverse every pair in the model lookup
+
+  //char order of last character
+  unsigned char mLastOrder;
+
+  uint32_t mTotalSeqs;
+  uint32_t mSeqCounters[NUMBER_OF_SEQ_CAT];
+
+  uint32_t mTotalChar;
+  //characters that fall in our sampling range
+  uint32_t mFreqChar;
+  
+  // Optional auxiliary prober for name decision. created and destroyed by the GroupProber
+  nsCharSetProber* mNameProber; 
+
+};
+
+
+extern const SequenceModel Koi8rModel;
+extern const SequenceModel Win1251Model;
+extern const SequenceModel Latin5Model;
+extern const SequenceModel MacCyrillicModel;
+extern const SequenceModel Ibm866Model;
+extern const SequenceModel Ibm855Model;
+extern const SequenceModel Latin7Model;
+extern const SequenceModel Win1253Model;
+extern const SequenceModel Latin5BulgarianModel;
+extern const SequenceModel Win1251BulgarianModel;
+extern const SequenceModel Latin2HungarianModel;
+extern const SequenceModel Win1250HungarianModel;
+extern const SequenceModel Win1255Model;
+extern const SequenceModel TIS620ThaiModel;
+
+#endif /* nsSingleByteCharSetProber_h__ */
+