Unify LookupIterator::GetRoot and Objects::GetRootMap

src/objects.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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/builtins.h"
@@ skipping 1552 matching lines @@
 
 #ifdef OBJECT_PRINT
   // For our gdb macros, we should perhaps change these in the future.
   void Print();
 
   // Prints this object with details.
   void Print(OStream& os);  // NOLINT
 #endif
 
  private:
+  friend class LookupIterator;
   friend class PrototypeIterator;
 
   // Return the map of the root of object's prototype chain.
   Map* GetRootMap(Isolate* isolate);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Object);
 };
 
 
 struct Brief {
@@ skipping 9645 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_