message: Use test_util.use_gpu()
diff: @@ -305,7 +305,7 @@ class GroupedConvTest(keras_parameterized.TestCase):
  )
  def test_group_conv(self, layer, input_shape):
  if test.is_gpu_available(cuda_only=True):
  - with self.cached_session(use_gpu=True):
  + with test_util.use_gpu():
  inputs = np.random.uniform(size=input_shape)
  outputs = layer(16, 3, groups=4, kernel_initializer="ones")(inputs)
  