Refactor ActivityAllAppsContainerView to depend on ActivityContext.

All of the all apps search support is in this class which is also being
refactored to depend on ActivityContext. At the end of this refactor,
this class can be merged with BaseAllAppsContainerView.

Test: Manual
Bug: 216683257
Change-Id: I8cbf21c8d9ce97cc60e9846cfe8c2a7bcb800a01
3 files changed