Merge "More consistent javadoc for PendingIntent.send" into udc-dev am: 08255d96 am: e3b12b1b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22215893



Change-Id: I6dc66916280f07aed71b59868901b1ead9751c0e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>