fetch and update shortcut icons in background thread
Bug: 141568904
Test: Manually verified use cases from following call-site (with and
without delay)
LauncherAppsCompatVO
1. (Custom Shortcut) Long click on google maps -> widgets ->
drag driving mode to workspace.
2. Open chrome -> add to home screen -> add -> add automatically.
InstallShortcutReceiver
Removed the line that trigger above flow for android O and above,
then open chrome -> add to home screen -> add -> add automatically.
ShortcutDragPreviewProvider
qdb -> long press on suggested app that has deep shortcut -> drag
to workspace.
Change-Id: I59a4d004913a8df697af1fcfe0a080b6da01eefd
5 files changed