Object::GetElements() and friends maybehandlification.

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1063 matching lines @@
   }
   return Failure::Exception();
 }
 
 
 bool Object::HasSpecificClassOf(String* name) {
   return this->IsJSObject() && (JSObject::cast(this)->class_name() == name);
 }
 
 
-Handle<Object> Object::GetElement(Isolate* isolate,
-                                  Handle<Object> object,
-                                  uint32_t index) {
+MaybeHandle<Object> Object::GetElement(Isolate* isolate,
+                                       Handle<Object> object,
+                                       uint32_t index) {
   // GetElement can trigger a getter which can cause allocation.
   // This was not always the case. This ASSERT is here to catch
   // leftover incorrect uses.
   ASSERT(AllowHeapAllocation::IsAllowed());
   return Object::GetElementWithReceiver(isolate, object, object, index);
 }
 
 
 Handle<Object> Object::GetElementNoExceptionThrown(Isolate* isolate,
                                                    Handle<Object> object,
                                                    uint32_t index) {
   Handle<Object> result =
-      Object::GetElementWithReceiver(isolate, object, object, index);
-  CHECK_NOT_EMPTY_HANDLE(isolate, result);
+      Object::GetElementWithReceiver(
+          isolate, object, object, index).ToHandleChecked();
   return result;
 }
 
 
 MaybeObject* Object::GetProperty(Name* key) {
   PropertyAttributes attributes;
   return GetPropertyWithReceiver(this, key, &attributes);
 }
 
 
@@ skipping 5938 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_