Merge "Migrate DynamicSystemService to @EnforcePermission" am: b845dbac21 am: 746cfb436c am: 3dd695c244 am: 1570345144

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1946229

Change-Id: I08c2d542318f8b17ff00400a2a9c96620b7529f5