message: Give up on formatting tests and examples
  clang-format really doesn't like the builder pattern. We can re-enable
  it when we get rid of it.
diff: @@ -10,8 +10,9 @@ base_commit=$(git rev-parse $TRAVIS_BRANCH)
  echo "Formatting against $TRAVIS_BRANCH a.k.a. $base_commit..."
  echo
  +skipped_directories="(examples|src/tests/(unittests|end2end)|third_party)"
  # Find the files modified that need formatting
  -files_to_check=$(git diff --name-only $base_commit | grep -E "*.(c|cpp|mm|h)$" | grep -vE "^third_party/*")
  +files_to_check=$(git diff --name-only $base_commit | grep -E "*.(c|cpp|mm|h)$" | grep -vE "^$skipped_directories/*")
  if [ -z "$files_to_check" ]; then
  echo "No modified files to format."
  exit 0
  