This reverts commit 71cefb593f.
Reason for revert: The default padding is added by the framework not the launcher. We really need to subtract padding from the size.
Bug: 190498032
Change-Id: If7f164da34aec3d8e022ef2c752b72292cca0489
Test: Set the grid to 4x5 (without padding) and verify the min / max
size sent to Conversation widget is expected.
Bug: 190498032
Change-Id: I8ef6e5d897ebd0e2ea9af4497b00059c8dfad70a