Make it possible to use HeapType inside objects-inl.h.

src/v8.h

 // Copyright 2011 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 48 matching lines @@
 #include "flags.h"
 
 // Objects & heap
 #include "objects-inl.h"
 #include "spaces-inl.h"
 #include "heap-inl.h"
 #include "incremental-marking-inl.h"
 #include "mark-compact-inl.h"
 #include "log-inl.h"
 #include "handles-inl.h"
+#include "types-inl.h"
 #include "zone-inl.h"
 
 namespace v8 {
 namespace internal {
 
 class Deserializer;
 
 class V8 : public AllStatic {
  public:
   // Global actions.
@@ skipping 49 matching lines @@
   static v8::Platform* platform_;
 };
 
 
 // JavaScript defines two kinds of 'nil'.
 enum NilValue { kNullValue, kUndefinedValue };
 
 
 } }  // namespace v8::internal
 
-namespace i = v8::internal;
-
 #endif  // V8_V8_H_