Refactor UidDetailProvider and its dependencies to SettingsLib.

so that it can be reused by Wear app data usage.

Change-Id: Id05f888274e15fbeffa175ee8073de02a8966867

src/com/android/settings/users/RestrictedProfileSettings.java

@@ -86,7 +86,7 @@ public class RestrictedProfileSettings extends AppRestrictionsFragment
         } else {
             ((TextView) mHeaderView.findViewById(android.R.id.title)).setText(info.name);
             ((ImageView) mHeaderView.findViewById(android.R.id.icon)).setImageDrawable(
-                    Utils.getUserIcon(getActivity(), mUserManager, info));
+                    com.android.settingslib.Utils.getUserIcon(getActivity(), mUserManager, info));
         }
     }