Log source with visibility change

- Add a method in VisibilityLoggerMixin to log visible event using
  LogMaker, which allows logging additional FIELD_CONTEXT field.
- In Utils.startFragment, add current page's metricsCategory as an extra
  to next page.
- In next page's onResume(), extract the previous page's metricsCategory
  and send it to VisibilityLoggerMixin.visible()
- Update all caller with additional paramters

Change-Id: I8e1f2597fa465b7d3aa16fa1d21c052a3219694a
Fix: 35359289
Test: RunSettingsRoboTests

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

@@ -411,7 +411,7 @@ public class RunningProcessesView extends FrameLayout
             args.putBoolean(RunningServiceDetails.KEY_BACKGROUND, mAdapter.mShowBackground);
 
             SettingsActivity sa = (SettingsActivity) mOwner.getActivity();
-            sa.startPreferencePanel(RunningServiceDetails.class.getName(), args,
+            sa.startPreferencePanel(null, RunningServiceDetails.class.getName(), args,
                     R.string.runningservicedetails_settings_title, null, null, 0);
         }
     }