tree d27d43801d2d0a2abdff8eab94043eb6e9c3b339
parent 0a64cfbb3c83e15c4a7ee5aeb1852d61d97c5dae
author Chris Li <lihongyu@google.com> 1586919827 -0700
committer Chris Li <lihongyu@google.com> 1589842328 -0700

Use getOrCreateRootHomeTask in ActivityStartController

Allow #getOrCreateRootHomeTask() to take argument onTop for the position
to create the home stack at.

Also don't allow untrusted secondary display to have system decorations.

Bug: 153624902
Test: atest CtsWindowManagerDeviceTestCases:MultiDisplaySystemDecorationTests
Change-Id: I12d0cfcf2436da3619abd314febddb05610e57f2