GitLab

We support changing Visual Studio versions with the `--ide=vs2017`
flag to `gn gen`. The default version is now VS2019.

Bug: 1038364
Change-Id: I4de7849aab72bfdf1a4ba7465858816500abf122
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1984705Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Aaron Gable <agable@chromium.org>
Cr-Commit-Position: refs/heads/master@{#729856}