Reformat all gn files in /tools.

`gn format` recently changed its formatting behavior
for deps, source, and a few other elements when they
are assigned (with =) single-element lists to be consistent
with the formatting of updates (with +=) with single-element.

Now that we've rolled in a GN binary with the change,
reformat all files so that people don't get presubmit
warnings due to this.

This CL was uploaded by git cl split.

Bug: 1041419
Change-Id: I51294dc9b12ec3659dc430ee62c69b063c0c04df
Auto-Submit: Nico Weber <>
Reviewed-by: Bruce Dawson <>
Commit-Queue: Nico Weber <>
Cr-Original-Commit-Position: refs/heads/master@{#731507}
Cr-Mirrored-Commit: 3fd99e95d33408d928561144562a5196a5a9fd37
1 file changed
tree: 8160ba6d8155b120c2ebd6f1d6ffcf9134e293cf