Revert "Extract shortcuts loading logic from ChooserActivity"

This reverts commit 9f9dceaa1398c925b233bcc54fb47cf3531a88da.

Reason for revert: DroidMonitor-triggered revert due to breakage b/259256230.

Change-Id: I399625feb7ee3e6858db2863c8d66e62eccc98c4
11 files changed