tree f6d6772dbaed816f110abc7ee76a118342a18541
parent 57fce6c63c593cf115e2ee563f0b60b6c2c87d99
author Daichi Hirono <hirono@google.com> 1513584174 +0900
committer Daichi Hirono <hirono@google.com> 1516238054 +0900

Create a drag shadow surface in app process,

Previoulsy a drag shadow surface is created in the system process. App needs
to call one more binder call (prepareDrag) to obtain the surface from
the system process.

The CL lets an app to create a drag shadow surface by itself. Then app
transfer the surface to system server by using reparent
API.

Bug: 70818582
Test: com.android.server.wm.DragDropControllerTests,
      android.server.wm.CrossAppDragAndDropTests,
      manually check the drag and drop behavior on test app.
Change-Id: I72796efffbefe78a802d7c441dea308d1cdea572