Revert r8619 because of Webkit failures.

src/objects.h

Index: src/objects.h
===================================================================
--- src/objects.h	(revision 8625)
+++ src/objects.h	(working copy)
@@ -1640,11 +1640,6 @@
   MUST_USE_RESULT inline MaybeObject* SetHiddenPropertiesObject(
       Object* hidden_obj);
 
-  MUST_USE_RESULT MaybeObject* GetHiddenProperties(bool create_if_needed);
-
-  // Retrieves a permanent object identity hash code.
-  MUST_USE_RESULT MaybeObject* GetIdentityHash();
-
   MUST_USE_RESULT MaybeObject* DeleteProperty(String* name, DeleteMode mode);
   MUST_USE_RESULT MaybeObject* DeleteElement(uint32_t index, DeleteMode mode);
 
@@ -2926,29 +2921,6 @@
 };
 
 
-class ObjectDictionaryShape {
- public:
-  static inline bool IsMatch(JSObject* key, Object* other);
-  static inline uint32_t Hash(JSObject* key);
-  static inline uint32_t HashForObject(JSObject* key, Object* object);
-  MUST_USE_RESULT static inline MaybeObject* AsObject(JSObject* key);
-  static const int kPrefixSize = 2;
-  static const int kEntrySize = 3;
-  static const bool kIsEnumerable = false;
-};
-
-
-class ObjectDictionary: public Dictionary<ObjectDictionaryShape, JSObject*> {
- public:
-  static inline ObjectDictionary* cast(Object* obj) {
-    ASSERT(obj->IsDictionary());
-    return reinterpret_cast<ObjectDictionary*>(obj);
-  }
-
-  MUST_USE_RESULT MaybeObject* AddChecked(JSObject* key, Object* value);
-};
-
-
 // JSFunctionResultCache caches results of some JSFunction invocation.
 // It is a fixed array with fixed structure:
 //   [0]: factory function