tree 088a29ae6db849cb907bb913b60bf59bf9c11438
parent 5b12734fb0d1c189ed9ab699bdb1a4d26c6ed8b8
author Winson Chung <winsonc@google.com> 1481655732 -0800
committer Winson Chung <winsonc@google.com> 1486939935 -0800

Create a new stack for the assistant activity.

- Add a new stack that is not resized with multiwindow, and
  appears above the fullscreen and docked stacks, but below
  the pinned stack
- Add a method on VoiceInteractionSession to allow the assistant
  to launch activities into this new fullscreen stack.
- Also prevent any activities in the assist stack from the
  fetching of the on screen assist data.

Bug: 30999386
Test: android.server.cts.ActivityManagerAssistantStackTests

Change-Id: I22ab7629b5f758cf1e66d7d1c26648af6bc887c9