Merge "Update setUserAgentString API description" into main am: fc31e4ed5a am: f4eb60fada am: dce3bf90d3

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2769265

Change-Id: I143f59682addab23c4e62034406e14c909d35d97
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>