Merge "Allow the host to send empty clipboards to the guest" am: d20bc58a...

Merge "Allow the host to send empty clipboards to the guest" am: d20bc58a am: 7bdece28 am: c8909496

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2415825



Change-Id: I472dbd6a93e137a3c8c20d13860ea26b0b1faff4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>