[automerger skipped] Merge "Add NetworkRequest.Builder creating from an existing instance" am: 9327a57876 am: d99881fb33 am: 703fc77437 -s ours

am skip reason: skip tag Change-Id I068462b2a1410daf67b0c95f2b643d396f079531 with SHA-1 26ab6df3c8 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1649294

Change-Id: Icd22cc8edbfbbfe0dc8baecdc966d11c9a43a2ff