Temporarily fix directory tile heights in grid mode.
Temporarily fix directory tile heights in grid mode.

BUG=26760493

Change-Id: I118e30cdf3892ef6857735f4a4f69a128b3f1c36

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base