Google Analytics has been announced to become part of the rolling out Google Play Services 4.3, however it is not yet included in the Google Play Services packages list:
It's part of the package list now.
I think the basic functionality works something like this...
import com.google.android.gms.analytics.GoogleAnalytics;
@Override
protected void onStart() {
super.onStart();
GoogleAnalytics.getInstance(this).reportActivityStart(this);
}
@Override
protected void onStop() {
super.onStop();
GoogleAnalytics.getInstance(this).reportActivityStop(this);
}