Refactor ANGLE target to allow GoogleANGLE to override it. GoogleANGLE will be signed in a different part of Android so it needs to be able to reference ANGLE's target and defaults to override certain properties. Update the manifests to request the needed permissions to use the developer options. Bug: b:142320172 Change-Id: Ia47815ab53f8de66332412efa2cc0fca3175e2cc Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2096815 Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Geoff Lang <geofflang@chromium.org>