Merge "Add **/package.html to docs srcs" am: f68b61fcee am: 28f3de76c3 am: 9f04baf35c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1655730

Change-Id: I2f65ea1516f747b49f75d857a0e7f16a66649e94