Revert r5147 due to failing assert, with no simple solution. Issue 808.

src/objects.h

Index: src/objects.h
===================================================================
--- src/objects.h	(revision 5166)
+++ src/objects.h	(working copy)
@@ -631,7 +631,6 @@
   inline bool IsDictionary();
   inline bool IsSymbolTable();
   inline bool IsJSFunctionResultCache();
-  inline bool IsNormalizedMapCache();
   inline bool IsCompilationCacheTable();
   inline bool IsCodeCacheHashTable();
   inline bool IsMapCache();
@@ -2388,31 +2387,6 @@
 };
 
 
-// The cache for maps used by normalized (dictionary mode) objects.
-// Such maps do not have property descriptors, so a typical program
-// needs very limited number of distinct normalized maps.
-class NormalizedMapCache: public FixedArray {
- public:
-  static const int kEntries = 64;
-
-  Object* Get(Map* fast, PropertyNormalizationMode mode);
-
-  void Clear();
-
-  // Casting
-  static inline NormalizedMapCache* cast(Object* obj);
-
-#ifdef DEBUG
-  void NormalizedMapCacheVerify();
-#endif
-
- private:
-  static int Hash(Map* fast);
-
-  static bool CheckHit(Map* slow, Map* fast, PropertyNormalizationMode mode);
-};
-
-
 // ByteArray represents fixed sized byte arrays.  Used by the outside world,
 // such as PCRE, and also by the memory allocator and garbage collector to
 // fill in free blocks in the heap.
@@ -3056,8 +3030,6 @@
 
   Object* CopyDropDescriptors();
 
-  Object* CopyNormalized(PropertyNormalizationMode mode);
-
   // Returns a copy of the map, with all transitions dropped from the
   // instance descriptors.
   Object* CopyDropTransitions();
@@ -3121,7 +3093,6 @@
 #ifdef DEBUG
   void MapPrint();
   void MapVerify();
-  void NormalizedMapVerify();
 #endif
 
   inline Scavenger scavenger();
@@ -3160,8 +3131,6 @@
   static const int kPreAllocatedPropertyFieldsOffset =
       kInstanceSizesOffset + kPreAllocatedPropertyFieldsByte;
   // The byte at position 3 is not in use at the moment.
-  static const int kUnusedByte = 3;
-  static const int kUnusedOffset = kInstanceSizesOffset + kUnusedByte;
 
   // Byte offsets within kInstanceAttributesOffset attributes.
   static const int kInstanceTypeOffset = kInstanceAttributesOffset + 0;