Change exception type to Object.

src/runtime.cc

 // 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 10818 matching lines @@
       if (structure->IsForeign() || structure->IsAccessorInfo()) {
         Isolate* isolate = heap->isolate();
         HandleScope scope(isolate);
         MaybeHandle<Object> maybe_value = JSObject::GetPropertyWithCallback(
             handle(result->holder(), isolate),
             handle(receiver, isolate),
             handle(structure, isolate),
             handle(name, isolate));
         Handle<Object> value;
         if (maybe_value.ToHandle(&value)) return *value;
-        MaybeObject* exception = heap->isolate()->pending_exception();
+        Object* exception = heap->isolate()->pending_exception();
         heap->isolate()->clear_pending_exception();
         if (caught_exception != NULL) *caught_exception = true;
         return exception;
       } else {
         return heap->undefined_value();
       }
     }
     case INTERCEPTOR:
       return heap->undefined_value();
     case HANDLER:
@@ skipping 4411 matching lines @@
   }
 }
 
 
 void Runtime::OutOfMemory() {
   Heap::FatalProcessOutOfMemory("CALL_AND_RETRY_LAST", true);
   UNREACHABLE();
 }
 
 } }  // namespace v8::internal