This is a best effort attempt at ensuring that the adverse impact of
reformatting the entire tree over the comments would be minimal. I've used a
combination of strategies including disabling of formatting, some manual
formatting and some changes to formatting to work around some clang-format
limitations.
Differential Revision: https://phabricator.services.mozilla.com/D13371
This switches over the few remaining usages of the deprecated
BeginWriting/EndWriting(iterator&) functions to the more standard
BeginWriting/EndWriting() functions.
Sylvestre Ledru