Revert of Internalize strings in-place

include/v8.h

 // Copyright 2012 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.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 2295 matching lines @@
 /**
  * A JavaScript string value (ECMA-262, 4.3.17).
  */
 class V8_EXPORT String : public Name {
  public:
   static const int kMaxLength = (1 << 28) - 16;
 
   enum Encoding {
     UNKNOWN_ENCODING = 0x1,
     TWO_BYTE_ENCODING = 0x0,
-    ONE_BYTE_ENCODING = 0x8
+    ONE_BYTE_ENCODING = 0x4
   };
   /**
    * Returns the number of characters in this string.
    */
   int Length() const;
 
   /**
    * Returns the number of bytes in the UTF-8 encoded
    * representation of this string.
    */
@@ skipping 6103 matching lines @@
   static const int kMapInstanceTypeAndBitFieldOffset =
       1 * kApiPointerSize + kApiIntSize;
   static const int kStringResourceOffset = 3 * kApiPointerSize;
 
   static const int kOddballKindOffset = 4 * kApiPointerSize + sizeof(double);
   static const int kForeignAddressOffset = kApiPointerSize;
   static const int kJSObjectHeaderSize = 3 * kApiPointerSize;
   static const int kFixedArrayHeaderSize = 2 * kApiPointerSize;
   static const int kContextHeaderSize = 2 * kApiPointerSize;
   static const int kContextEmbedderDataIndex = 5;
-  static const int kFullStringRepresentationMask = 0x0f;
-  static const int kStringEncodingMask = 0x8;
+  static const int kFullStringRepresentationMask = 0x07;
+  static const int kStringEncodingMask = 0x4;
   static const int kExternalTwoByteRepresentationTag = 0x02;
-  static const int kExternalOneByteRepresentationTag = 0x0a;
+  static const int kExternalOneByteRepresentationTag = 0x06;
 
   static const int kIsolateEmbedderDataOffset = 0 * kApiPointerSize;
   static const int kExternalMemoryOffset = 4 * kApiPointerSize;
   static const int kExternalMemoryLimitOffset =
       kExternalMemoryOffset + kApiInt64Size;
   static const int kIsolateRootsOffset = kExternalMemoryLimitOffset +
                                          kApiInt64Size + kApiInt64Size +
                                          kApiPointerSize + kApiPointerSize;
   static const int kUndefinedValueRootIndex = 4;
   static const int kTheHoleValueRootIndex = 5;
@@ skipping 1377 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_