Kiss goodbye to MaybeObject.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index 02f754ac26325bdbe5b86aa360a071865e5aaa72..59fede124d8b7572f1b0f117e54b2c62241a76e3 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -15,16 +15,6 @@ namespace internal {
 
 #ifdef VERIFY_HEAP
 
-void MaybeObject::Verify() {
-  Object* this_as_object;
-  if (ToObject(&this_as_object)) {
-    this_as_object->ObjectVerify();
-  } else {
-    Failure::cast(this)->FailureVerify();
-  }
-}
-
-
 void Object::ObjectVerify() {
   if (IsSmi()) {
     Smi::cast(this)->SmiVerify();
@@ -48,11 +38,6 @@ void Smi::SmiVerify() {
 }
 
 
-void Failure::FailureVerify() {
-  CHECK(IsFailure());
-}
-
-
 void HeapObject::HeapObjectVerify() {
   InstanceType instance_type = map()->instance_type();