- Introduce a function `getFirstTaskView()` in RecentsView to get the
first TaskView inside RecentsView.
- Replace `getTaskViewAt(0)` with this newly introduced function.
- Let `RecentsView.isTaskInExpectedScrollPosition()` accept a TaskView
instead of index of the TaskView. This can avoid using the index at
the callsites of this function.
- Change `getTaskViews()` to be a public function, thus it can be
used outside of the RecentsView.
Flag: EXEMPT as no functionality changes
Bug: 379942019
Test: Ensure the TaskViews required are correct in the following
scrnarios:
1. Swiping up from home screen to enter overview with empty or
multiple tasks
2. Swiping up from a fullscreen app to enter overview with
one or multiple tasks
3. Dimissing one or multiple tasks, exit and re-enter overview
w/o newly opened tasks
4. Remvoing all the tasks, re-enter overview w/o newly opened
tasks
Change-Id: If63ad6dc9f5106be08d867090fdaf616117dcd82
minch
0933ba83d8