Fix build caused by automerger and missing imports in master.
Fix build caused by automerger and missing imports in master.

gingerbread had an import android.os.*.  master doesn't.  auto-merger
applied it fine, but it doesn't compile.

Change-Id: I28d7b5053616a40223eeb29a0669831d5ca76d9e

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