[WIP] JSForInLowering and JSForInHasOwnProperty.

src/objects.h

 // Copyright 2015 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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 3158 matching lines @@
   static const int kEnumCacheBridgeCacheIndex = 0;
   static const int kEnumCacheBridgeIndicesCacheIndex = 1;
 
   // Layout description.
   static const int kDescriptorLengthOffset = FixedArray::kHeaderSize;
   static const int kEnumCacheOffset = kDescriptorLengthOffset + kPointerSize;
   static const int kFirstOffset = kEnumCacheOffset + kPointerSize;
 
   // Layout description for the bridge array.
   static const int kEnumCacheBridgeCacheOffset = FixedArray::kHeaderSize;
+  static const int kEnumCacheBridgeIndicesCacheOffset =
+      kEnumCacheBridgeCacheOffset + kPointerSize;
 
   // Layout of descriptor.
   // Naming is consistent with Dictionary classes for easy templating.
   static const int kEntryKeyIndex = 0;
   static const int kEntryDetailsIndex = 1;
   static const int kEntryValueIndex = 2;
   static const int kEntrySize = 3;
 
 #if defined(DEBUG) || defined(OBJECT_PRINT)
   // For our gdb macros, we should perhaps change these in the future.
@@ skipping 8399 matching lines @@
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #include "src/objects/object-macros-undef.h"
 
 #endif  // V8_OBJECTS_H_