Revert of Use in-object fields instead of private symbols for regexp slots.

src/runtime/runtime.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.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/objects.h"
 #include "src/unicode.h"
@@ skipping 541 matching lines @@
   F(GetHandler, 1, 1)               \
   F(GetCallTrap, 1, 1)              \
   F(GetConstructTrap, 1, 1)         \
   F(Fix, 1, 1)
 
 
 #define FOR_EACH_INTRINSIC_REGEXP(F)           \
   F(StringReplaceGlobalRegExpWithString, 4, 1) \
   F(StringSplit, 3, 1)                         \
   F(RegExpExec, 4, 1)                          \
-  F(RegExpFlags, 1, 1)                         \
-  F(RegExpSource, 1, 1)                        \
   F(RegExpConstructResult, 3, 1)               \
   F(RegExpInitializeAndCompile, 3, 1)          \
   F(MaterializeRegExpLiteral, 4, 1)            \
   F(RegExpExecMultiple, 4, 1)                  \
   F(RegExpExecReThrow, 4, 1)                   \
   F(IsRegExp, 1, 1)
 
 
 #define FOR_EACH_INTRINSIC_SCOPES(F)       \
   F(ThrowConstAssignError, 0, 1)           \
@@ skipping 688 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_