Merging r313182:

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r313182 | sylvestre | 2017-09-13 13:03:29 -0700 (Wed, 13 Sep 2017) | 13 lines

SplitEmptyFunction should be true in the Mozilla coding style

Summary:
As defined here: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Classes
See for the downstream bug report: https://bugzilla.mozilla.org/show_bug.cgi?id=1399359

Reviewers: Typz, djasper

Reviewed By: Typz

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D37795
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@318858 91177308-0d34-0410-b5e6-96231b3b80d8