tree 7e67dc0d7dc13a6f0d8be55b137f15849d6748fc
parent 7caa828e5d7dad4a07d4776498caed8529685d84
author chaviw <chaviw@google.com> 1550167234 -0800
committer chaviw <chaviw@google.com> 1550271367 -0800

Add synchronous transaction to wait for setInputWindow to complete (1/n)

Add SurfaceFlinger callback to notify when input windows have been set.

The call to set input windows from SF to InputDispatcher is one way.
Therefore, it won't wait to ensure the windows have been set. Add a
callback method to allow InputDispatcher to notify SF when it's finished
setting the input windows, allowing SF to block if needed.

Bug: 123041491
Test: Builds and runs
Change-Id: Ia4196d2e517c07d94ab9da71beab057d5d6fcf1c