Rollback of r16040 in trunk branch.

test/cctest/cctest.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 282 matching lines @@
 // Helper function that simulates a full old-space in the heap.
 static inline void SimulateFullSpace(v8::internal::PagedSpace* space) {
   int old_linear_size = static_cast<int>(space->limit() - space->top());
   space->Free(space->top(), old_linear_size);
   space->SetTop(space->limit(), space->limit());
   space->ResetFreeList();
   space->ClearStats();
 }
 
 
-// Adapted from http://en.wikipedia.org/wiki/Multiply-with-carry
-class RandomNumberGenerator {
- public:
-  RandomNumberGenerator() {
-    init();
-  }
-
-  void init(uint32_t seed = 0x5688c73e) {
-    static const uint32_t phi = 0x9e3779b9;
-    c = 362436;
-    i = kQSize-1;
-    Q[0] = seed;
-    Q[1] = seed + phi;
-    Q[2] = seed + phi + phi;
-    for (unsigned j = 3; j < kQSize; j++) {
-      Q[j] = Q[j - 3] ^ Q[j - 2] ^ phi ^ j;
-    }
-  }
-
-  uint32_t next() {
-    uint64_t a = 18782;
-    uint32_t r = 0xfffffffe;
-    i = (i + 1) & (kQSize-1);
-    uint64_t t = a * Q[i] + c;
-    c = (t >> 32);
-    uint32_t x = static_cast<uint32_t>(t + c);
-    if (x < c) {
-      x++;
-      c++;
-    }
-    return (Q[i] = r - x);
-  }
-
-  uint32_t next(int max) {
-    return next() % max;
-  }
-
-  bool next(double threshold) {
-    ASSERT(threshold >= 0.0 && threshold <= 1.0);
-    if (threshold == 1.0) return true;
-    if (threshold == 0.0) return false;
-    uint32_t value = next() % 100000;
-    return threshold > static_cast<double>(value)/100000.0;
-  }
-
- private:
-  static const uint32_t kQSize = 4096;
-  uint32_t Q[kQSize];
-  uint32_t c;
-  uint32_t i;
-};
-
-
 #endif  // ifndef CCTEST_H_