Address review comments from a previous CL.

vm/object_store.h

Index: vm/object_store.h
===================================================================
--- vm/object_store.h	(revision 9828)
+++ vm/object_store.h	(working copy)
@@ -19,8 +19,8 @@
 // by snapshots eventually.
 class ObjectStore {
  public:
-  // Index for objects/types/classes stored in the object store,
-  // this index is used in snapshots to refer to classes or objects directly.
+  // Index for objects/types stored in the object store,
+  // this index is used in snapshots to refer to objects directly.
   enum {
     kTrueValue = Object::kMaxId,
     kFalseValue,
@@ -36,44 +36,6 @@
     kStringInterface,
     kListInterface,
     kByteArrayInterface,
-    kObjectClass,
-    kIntegerImplementationClass,
-    kSmiClass,
-    kMintClass,
-    kBigintClass,
-    kDoubleClass,
-    kOneByteStringClass,
-    kTwoByteStringClass,
-    kFourByteStringClass,
-    kExternalOneByteStringClass,
-    kExternalTwoByteStringClass,
-    kExternalFourByteStringClass,
-    kBoolClass,
-    kArrayClass,
-    kImmutableArrayClass,
-    kGrowableObjectArrayClass,
-    kInt8ArrayClass,
-    kUint8ArrayClass,
-    kInt16ArrayClass,
-    kUint16ArrayClass,
-    kInt32ArrayClass,
-    kUint32ArrayClass,
-    kInt64ArrayClass,
-    kUint64ArrayClass,
-    kFloat32ArrayClass,
-    kFloat64ArrayClass,
-    kExternalInt8ArrayClass,
-    kExternalUint8ArrayClass,
-    kExternalInt16ArrayClass,
-    kExternalUint16ArrayClass,
-    kExternalInt32ArrayClass,
-    kExternalUint32ArrayClass,
-    kExternalInt64ArrayClass,
-    kExternalUint64ArrayClass,
-    kExternalFloat32ArrayClass,
-    kExternalFloat64ArrayClass,
-    kStacktraceClass,
-    kJSRegExpClass,
     kMaxId,
     kInvalidIndex = -1,
   };
@@ -508,7 +470,6 @@
   void VisitObjectPointers(ObjectPointerVisitor* visitor);
 
   RawClass* GetClass(int index);
-  int GetClassIndex(const RawClass* raw_class);
   RawType* GetType(int index);
   int GetTypeIndex(const RawType* raw_type);