message: [TF:XLA] Re-enable control flow ops tests on XLA:GPU
  It's unclear to me why these used to fail, but they pass now.
diff: @@ -600,7 +600,6 @@ class ControlFlowTest(test.TestCase, parameterized.TestCase):
  result = self.evaluate(r)
  self.assertAllEqual(12, result)
  - @test_util.disable_xla("b/128638446")
  @test_util.run_in_graph_and_eager_modes
  def testCondPruning(self):
  v1 = variables.Variable(7)
  @@ -1256,7 +1255,6 @@ class ControlFlowTest(test.TestCase, parameterized.TestCase):
  [1., 1.],
  [0., 0.]])
  - @test_util.disable_xla("b/128643464")
  def testCondGrad_MultiGather(self):
  # NOTE(skyewm): this test is interesting because the array_ops.gather and
  # ResourceVariable.sparse_read gradient functions returns IndexedSlices.
  @@ -1333,7 +1331,6 @@ class ControlFlowTest(test.TestCase, parameterized.TestCase):
  self.assertAllEqual(0.0, sess.run(result, feed_dict={predicate: True}))
  self.assertAllEqual(0.0, sess.run(result))
  - @test_util.disable_xla("b/128644469 PrintV2")
  @test_util.run_in_graph_and_eager_modes
  def testCondAutoControlDeps(self):
  if test_util.is_gpu_available():
  @@ -1406,7 +1403,6 @@ class ControlFlowTest(test.TestCase, parameterized.TestCase):
  self.assertEqual(["C"], filter_test_messages(printed.contents()))
  - @test_util.disable_xla("b/128643646 PrintV2")
  @test_util.run_in_graph_and_eager_modes
  def testWhileAutoControlDeps(self):
  # Legacy while_loop fails this test because it produces deprecation notices
  