Revert r13275 and 13276 (Remove most uses of StringInputBuffer).

src/objects.h

 // Copyright 2012 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 7182 matching lines @@
   // do any heap allocations.  This is useful when printing stack traces.
   SmartArrayPointer<uc16> ToWideCString(
       RobustnessFlag robustness_flag = FAST_STRING_TRAVERSAL);
 
   // Tells whether the hash code has been computed.
   inline bool HasHashCode();
 
   // Returns a hash value used for the property table
   inline uint32_t Hash();
 
-  bool ComputeArrayIndex(uint32_t* index);
+  static bool ComputeArrayIndex(unibrow::CharacterStream* buffer,
+                                uint32_t* index,
+                                int length);
 
   // Externalization.
   bool MakeExternal(v8::String::ExternalStringResource* resource);
   bool MakeExternal(v8::String::ExternalAsciiStringResource* resource);
 
   // Conversion.
   inline bool AsArrayIndex(uint32_t* index);
 
   // Casting.
   static inline String* cast(Object* obj);
@@ skipping 675 matching lines @@
   unsigned consumed_;
   ConsString* root_;
   DISALLOW_COPY_AND_ASSIGN(ConsStringIteratorOp);
 };
 
 
 // Note: this class is not GC-safe.
 class StringCharacterStream {
  public:
   inline StringCharacterStream(String* string,
-                               ConsStringIteratorOp* op,
-                               unsigned offset = 0);
+                               unsigned offset,
+                               ConsStringIteratorOp* op);
   inline uint16_t GetNext();
   inline bool HasMore();
-  inline void Reset(String* string, unsigned offset = 0);
+  inline void Reset(String* string, unsigned offset, ConsStringIteratorOp* op);
   inline void VisitOneByteString(const uint8_t* chars, unsigned length);
   inline void VisitTwoByteString(const uint16_t* chars, unsigned length);
 
  private:
   bool is_one_byte_;
   union {
     const uint8_t* buffer8_;
     const uint16_t* buffer16_;
   };
   const uint8_t* end_;
@@ skipping 971 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_