Track some changes to reference types (mostly Blink types moving to Oilpan).

Source/bindings/modules/dart/custom/DartDeviceOrientationEventCustom.cpp

 // Copyright 2011, 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 58 matching lines @@
         double gamma = DartUtilities::dartToDouble(args , 6, exception);
         if (exception)
             goto fail;
         bool gammaProvided = true;
 
         bool absolute = DartUtilities::dartToBool(Dart_GetNativeArgument(args , 7), exception);
         if (exception)
             goto fail;
         bool absoluteProvided = true;
 
-        RefPtr<DeviceOrientationData> orientation = DeviceOrientationData::create(alphaProvided, alpha, betaProvided, beta, gammaProvided, gamma, absoluteProvided, absolute);
-        receiver->initDeviceOrientationEvent(type, bubbles, cancelable, orientation.get());
+        DeviceOrientationData* orientation = DeviceOrientationData::create(alphaProvided, alpha, betaProvided, beta, gammaProvided, gamma, absoluteProvided, absolute);
+        receiver->initDeviceOrientationEvent(type, bubbles, cancelable, orientation);
         return;
     }
 
 fail:
     Dart_ThrowException(exception);
     ASSERT_NOT_REACHED();
 }
 
 void absoluteGetter(Dart_NativeArguments args)
 {
@@ skipping 23 matching lines @@
 {
     DeviceOrientationEvent* receiver = DartDOMWrapper::receiver<DeviceOrientationEvent>(args);
     if (!receiver->orientation()->canProvideGamma())
         return;
     Dart_SetReturnValue(args, DartUtilities::doubleToDart(receiver->orientation()->gamma()));
 }
 
 }
 
 }