Change AllApps padding to use a Rect

AllApps uses different values for left and right padding in some places (e.g. ActivityAllAppsContainerView uses workspacePadding.left/right), and this change is the first step into moving those values into DeviceProfile.

Bug: 269632571
Test: NexusLauncherTest
Flag: NONE
Change-Id: I14c4edf55ca74f256b1aaa336fff246a0c78e25d
17 files changed