Reduce ANGLE APK size Add some flags to generate_android_bp.py to make the AOSP match the ANGLE build flags, which makes the CQ testing more relevant and reduces the ANGLE APK size. Additionally, disable various GN args that are no longer required (GL, ESSL, HSSL). Together, this reduces the ANGLE APK size in AOSP from 22.2MB to 16.7MB. This CL also makes some fixes to roll_aosp.sh that are suggested by "Shell Scipt". Bug: b/189125396 Test: manual verification Change-Id: Iea33de799a00ffff182cf028a6998e1ef01a00e1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2912933 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Tim Van Patten <timvp@google.com>