message: [XLA] Skip two tests for XLA.
  They are statistical tests for very low probability regions, which is not very
  practically useful.
diff: @@ -188,10 +188,12 @@ class ParameterizedTruncatedNormalTest(test.TestCase):
  self.validateMoments([10**5], 0.0, 1.0, -6.0, -3.0)
  @test_util.run_deprecated_v1
  + @test_util.disable_xla("Low probability region")
  def testTwoSidedLeftTailShifted(self):
  self.validateKolmogorovSmirnov([10**5], 6.0, 1.0, -1.0, 1.0)
  @test_util.run_deprecated_v1
  + @test_util.disable_xla("Low probability region")
  def testRightTailShifted(self):
  self.validateMoments([10**5], -5.0, 1.0, 2.0, np.infty)
  