Memory Usage by apps no longer shows empty icon

ProcessStatsPreference will now fallback to a
default icon instead of an empty icon. Logging
was added to be able to identify what causes
list to add entries with no text.

Test: Manual, requires installing -> uninstalling an app
Bug: 31812426
Change-Id: Ia1b147ba7a552ec4880776ebf8dba6745154117a

src/com/android/settings/applications/ProcStatsPackageEntry.java

@@ -22,6 +22,7 @@ import android.content.pm.PackageManager;
 import android.os.Parcel;
 import android.os.Parcelable;
 
+import android.util.Log;
 import com.android.settings.R;
 import com.android.settings.Utils;
 
@@ -127,6 +128,7 @@ public class ProcStatsPackageEntry implements Parcelable {
                 mUiLabel = mUiTargetApp.loadLabel(pm).toString();
             }
         } catch (PackageManager.NameNotFoundException e) {
+            Log.d(TAG, "could not find package: " + mPackage);
         }
     }