tree 0fa20e2708d4130b60ca39eb7053fb1f98fb561c
parent f49ecd60e2363d414d3ff1d9d1a7d3110d741125
author Grace Kloba <klobag@google.com> 1271051622 -0700
committer Grace Kloba <klobag@google.com> 1271084886 -0700

More aggressively free up the background tabs when
memory is low. Instead of free one tab per onLowMemory,
free half of opened tabs as onLowMemory is not called
as often as before.

Fix http://b/issue?id=2583335