Remove some uses of MaybeObject methods.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 6fe4f3a79c8eccc69e71b88e8376bf303062cbb1..71bd97a625aa544cd341da5abd134e8c1cac048f 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -924,17 +924,11 @@ class MaybeObject BASE_EMBEDDED {
   inline bool IsFailure();
   inline bool IsRetryAfterGC();
   inline bool IsException();
-  INLINE(bool IsTheHole());
-  INLINE(bool IsUninitialized());
   inline bool ToObject(Object** obj) {
     if (IsFailure()) return false;
     *obj = reinterpret_cast<Object*>(this);
     return true;
   }
-  inline Failure* ToFailureUnchecked() {
-    ASSERT(IsFailure());
-    return reinterpret_cast<Failure*>(this);
-  }
   inline Object* ToObjectUnchecked() {
     // TODO(jkummerow): Turn this back into an ASSERT when we can be certain
     // that it never fires in Release mode in the wild.
@@ -953,13 +947,6 @@ class MaybeObject BASE_EMBEDDED {
     return true;
   }
 
-  template<typename T>
-    inline bool ToHandle(Handle<T>* obj, Isolate* isolate) {
-    if (IsFailure()) return false;
-    *obj = handle(T::cast(reinterpret_cast<Object*>(this)), isolate);
-    return true;
-  }
-
 #ifdef OBJECT_PRINT
   // Prints this object with details.
   void Print();
@@ -1710,8 +1697,6 @@ class Failure: public MaybeObject {
   // Returns the space that needs to be collected for RetryAfterGC failures.
   inline AllocationSpace allocation_space() const;
 
-  inline bool IsInternalError() const;
-
   static inline Failure* RetryAfterGC(AllocationSpace space);
   static inline Failure* RetryAfterGC();  // NEW_SPACE
   static inline Failure* Exception();