Forgot to format BUILD.gn in CL 46978bccd3659
Remove unnecessary android:debuggable setting
Bug: angleproject:2520

Change-Id: I31457c82536827f78e3aa17c02dd8e878f803f04
Reviewed-on: https://chromium-review.googlesource.com/1030259Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>