Ensures that CompatibilityInfo is always set in Resources
Ensures that CompatibilityInfo is always set in Resources

- Adds null checks when setting mCompatibilityInfo and uses default no-op
  CompatibilityInfo object instead of null
- Removes null checks when calling methods on mCompatibilityInfo since it is never
  null

bug:10204942

Change-Id: I36e88f5cdceb46b8b19fb902270ef74023a81546

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