Fixes to roll ANGLE into AOSP Rolling ANGLE into AOSP requires the following fixes: 1.) Update scripts/roll_aosp.sh to not delete third_party/abseil-cpp. 2.) Update BUILD.gn to add a dependency on libnativewindow for "angle_common". Test: AOSP Presubmit Bug: angleproject:5230 Change-Id: If97c44ce041e576edc7c0c43700030b4538e8ab5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2495550 Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Tim Van Patten <timvp@google.com>