tree b1e208c94278b0eb881369e1bfb55643cd6d1802
parent 5a2eb83383c013ea0481e6688f22d892c61286ff
author Jiaquan He <hejq@google.com> 1481665606 -0800
committer Jiaquan He <hejq@google.com> 1481845890 -0800

Add a grid-based layout algorithm for Recents.

This commit adds a layout algorithm for Recents so that task views are
layouted in a grid mode, to take full use of the screen space.

Change-Id: Ia0e388ea2e8a6ae348ed002a830212e8fea546fc