tree cd844a61b0744ea394a4ccee9b783f2152c5d069
parent fe12d97a52bb7ed51ccdd5fcb477c93b9297b9eb
author Wale Ogunwale <ogunwale@google.com> 1503584652 -0700
committer Wale Ogunwale <ogunwale@google.com> 1504216924 -0700

Introducing activityType window configuration.

Used to represent the current activity type of the window
configuration which can be undefined, standard, home, recents, or
assistant. This information if currently represented in a few ways in
the window heirarchy e.g. with stack id or with fields in tasks and
activities. This change allows us to represent the idea in a more
structure way without overloading concepts like stack ids.

Test: bit FrameworksServicesTests:com.android.server.wm.ConfigurationContainerTests
Test: bit FrameworksServicesTests:com.android.server.wm.WindowConfigurationTests
Test: go/wm-smoke
Change-Id: I7d7283c72e806972eeb3a8dab448f195dd6cd811