clang-format 1.0.17 substantially improves formatting for fat arrow functions
and array literal detection. It also fixes a number of minor formatting issues.
Note: We can’t write a unit test for this as our unit tests
are running in Dartium, where the error does not occur.
However, we previously had a failure in our e2e tests
in `hello_world/index_dynamic.html`
when removing the TODOs in `application.ts`.
Closes#2185
