Allow tv density in HC MR1 to support tv 720p

Starting in HC mr2, this is in the public SDK so this change is temporary in hc mr1 -- for mr2 and beyond, it should check displaymetrics' constants directly

This is similar to tests/tests/app/src/android/app/cts/ActivityManagerMemoryClassTest.java:

Change-Id: I5b8c31342caffe6bce902d85c8e7f029332b08d3
1 file changed