Replace C++ bitfields with our own BitFields

src/unicode-inl.h

 // Copyright 2007-2010 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_UNICODE_INL_H_
 #define V8_UNICODE_INL_H_
 
 #include "src/unicode.h"
 #include "src/base/logging.h"
 #include "src/utils.h"
 
 namespace unibrow {
 
 template <class T, int s> bool Predicate<T, s>::get(uchar code_point) {
   CacheEntry entry = entries_[code_point & kMask];
-  if (entry.code_point_ == code_point) return entry.value_;
+  if (entry.code_point() == code_point) return entry.value();
   return CalculateValue(code_point);
 }
 
 template <class T, int s> bool Predicate<T, s>::CalculateValue(
     uchar code_point) {
   bool result = T::Is(code_point);
   entries_[code_point & kMask] = CacheEntry(code_point, result);
   return result;
 }
 
@@ skipping 106 matching lines @@
     }
     return 3;
   } else {
     return 4;
   }
 }
 
 }  // namespace unibrow
 
 #endif  // V8_UNICODE_INL_H_