some fuzz hacking

fuzz/Fuzz.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef Fuzz_DEFINED
 #define Fuzz_DEFINED
 
 #include "SkData.h"
 #include "SkTRegistry.h"
 #include "SkTypes.h"
 #include <stdlib.h>
 
 class Fuzz : SkNoncopyable {
 public:
     explicit Fuzz(SkData*);
 
+    uint8_t  nextB();
     uint32_t nextU();
     float    nextF();
 
-    // These return a value in [min, max).
-    uint32_t nextURange(uint32_t min, uint32_t max);
-    float    nextFRange(float    min, float    max);
-
 private:
     SkAutoTUnref<SkData> fBytes;
+    int fNextByte;
 };
 
 struct Fuzzable {
     const char* name;
     void (*fn)(Fuzz*);
 };
 
 #define DEF_FUZZ(name, f)                                        \
     static void fuzz_##name(Fuzz*);                              \
     SkTRegistry<Fuzzable> register_##name({#name, fuzz_##name}); \
     static void fuzz_##name(Fuzz* f)
 
 #define ASSERT(cond) do { if (!(cond)) abort(); } while(false)
 
 #endif//Fuzz_DEFINED