Oilpan: build fix followup to r170842.

Source/web/tests/WebInputEventFactoryTestGtk.cpp

 /*
  * Copyright (C) 2010 Google Inc. 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
@@ skipping 175 matching lines @@
     gdkEvent.type = GDK_KEY_PRESS;
     gdkEvent.keyval = GDK_KP_5;
     gdkEvent.string = five;
 
     // Numpad flag should be set on the WebKeyboardEvent.
     WebKeyboardEvent webEvent = WebInputEventFactory::keyboardEvent(&gdkEvent);
     EXPECT_TRUE(webEvent.modifiers & WebInputEvent::IsKeyPad);
 
     // Round-trip through the WebCore KeyboardEvent class.
     blink::PlatformKeyboardEventBuilder platformBuilder(webEvent);
-    RefPtr<WebCore::KeyboardEvent> keypress = WebCore::KeyboardEvent::create(platformBuilder, 0);
+    RefPtrWillBeRawPtr<WebCore::KeyboardEvent> keypress = WebCore::KeyboardEvent::create(platformBuilder, 0);
     EXPECT_TRUE(keypress->location() == WebCore::KeyboardEvent::DOM_KEY_LOCATION_NUMPAD);
 
     blink::WebKeyboardEventBuilder builder(*keypress);
     EXPECT_TRUE(builder.modifiers & WebInputEvent::IsKeyPad);
 }
 
 } // anonymous namespace