message: [XLA] Add test assertions to xla_hlo_profile_test
  These assertions help catch scenarios where the profile text is missing.
  Without these assertions, the test would dereference memory locations that they
  should not.
diff: @@ -225,14 +225,17 @@ XLA_TEST_F(HloProfileTest, ProfileSingleComputation) {
  line_no++; // Skip 'Execution profile for ....'
  + ASSERT_LT(line_no, profile_output_lines.size());
  TF_ASSERT_OK(ParseOneProfileOutputLine(profile_output_lines[line_no++],
  /*expect_hlo=*/false,
  &parsed_profile_lines));
  + ASSERT_LT(line_no, profile_output_lines.size());
  TF_ASSERT_OK(ParseOneProfileOutputLine(profile_output_lines[line_no++],
  /*expect_hlo=*/true,
  &parsed_profile_lines));
  + ASSERT_LT(line_no, profile_output_lines.size());
  TF_ASSERT_OK(ParseOneProfileOutputLine(profile_output_lines[line_no++],
  /*expect_hlo=*/true,
  &parsed_profile_lines));
  