Change View2D function names

Also make the TouchZoom interaction no longer use a private View2D function.

src/ol/interaction/touchzoominteraction.js

@@ -59,7 +59,7 @@ ol.interaction.TouchZoom.prototype.handleTouchMove =
   var anchor = map.getCoordinateFromPixel(centroid);
 
   // scale, bypass the resolution constraint
-  view.zoom_(map, view.getResolution() * scaleDelta, anchor);
+  view.zoomNoConstraint(map, view.getResolution() * scaleDelta, anchor);
 
 };
 
@@ -73,7 +73,7 @@ ol.interaction.TouchZoom.prototype.handleTouchEnd =
     var map = mapBrowserEvent.map;
     var view = map.getView();
     // take the resolution constraint into account
-    view.zoomToResolution(map, view.getResolution());
+    view.zoom(map, view.getResolution());
     view.setHint(ol.ViewHint.INTERACTING, -1);
     return false;
   } else {