Use Unique<Cell> and Unique<PropertyCell> in LoadGlobalCell and StoreGlobalCell.

src/unique.h

 // Copyright 2013 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 72 matching lines @@
     T* a = NULL;
     S* b = NULL;
     a = b;  // Fake assignment to enforce type checks.
     USE(a);
 #endif
     raw_address_ = uniq.raw_address_;
     handle_ = uniq.handle_;
   }
 
   template <typename U>
-  bool operator==(const Unique<U>& other) const {
+  inline bool operator==(const Unique<U>& other) const {
     ASSERT(IsInitialized() && other.IsInitialized());
     return raw_address_ == other.raw_address_;
   }
 
   template <typename U>
-  bool operator!=(const Unique<U>& other) const {
+  inline bool operator!=(const Unique<U>& other) const {
     ASSERT(IsInitialized() && other.IsInitialized());
     return raw_address_ != other.raw_address_;
   }
 
-  intptr_t Hashcode() const {
+  inline intptr_t Hashcode() const {
     ASSERT(IsInitialized());
     return reinterpret_cast<intptr_t>(raw_address_);
   }
 
-  bool IsNull() const {
+  inline bool IsNull() const {
     ASSERT(IsInitialized());
     return raw_address_ == NULL;
   }
 
   // Extract the handle from this Unique in order to dereference it.
   // WARNING: Only do this if you have access to the heap.
-  Handle<T> handle() const {
+  inline Handle<T> handle() const {
     return handle_;
   }
 
-  bool IsInitialized() const {
+  inline bool IsInitialized() const {
     return raw_address_ != NULL || handle_.is_null();
   }
 
   // TODO(titzer): this is a hack to migrate to Unique<T> incrementally.
   static Unique<T> CreateUninitialized(Handle<T> handle) {
     return Unique<T>(static_cast<Address>(NULL), handle);
   }
 
   friend class UniqueSet<T>;  // Uses internal details for speed.
   template <class U>
@@ skipping 165 matching lines @@
       capacity_ = new_capacity;
       array_ = new_array;
     }
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_UNIQUE_H_