clang-format update: java formatting is now better

[Nico Weber]

Hi,

thanks to smaier@, we have an updated clang-format binary, the first update in quite a while.

The main new feature is better formatting of Java code, including automatic import line sorting (implemented in clang-format by smaier@ as well!) See the blocking list on https://crbug.com/768586 for issues big and small that this should fix.

We tried to make sure that this doesn't regress anything, but it's of course possible something fell through the cracks. If you see `git cl format` behaving strangely on C++, Objective-C, or Java code, please file a bug (https://chromium.googlesource.com/chromium/src/+/HEAD/docs/clang_format.md#reporting-problems) and cc smaier and me.

Nico

[Nico Weber]

(forgot to cc smaier@)