bug:3286430 set default size of 100MB for download data dir
bug:3286430 set default size of 100MB for download data dir

Change-Id: I793ae8944eab1841896732f41decd5d0211b3175

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