Defines in a namespace that can be required

For consistency, all defines are in the ol namespace.  If they are to be moved to another namespace, they need to be requireable.

src/ol/interaction/keyboardpaninteraction.js

@@ -6,6 +6,7 @@ goog.require('goog.asserts');
 goog.require('goog.events.KeyCodes');
 goog.require('goog.events.KeyHandler.EventType');
 goog.require('goog.functions');
+goog.require('ol');
 goog.require('ol.View2D');
 goog.require('ol.coordinate');
 goog.require('ol.events.ConditionType');
@@ -13,12 +14,6 @@ goog.require('ol.events.condition');
 goog.require('ol.interaction.Interaction');
 
 
-/**
- * @define {number} Pan duration.
- */
-ol.interaction.KEYBOARD_PAN_DURATION = 100;
-
-
 
 /**
  * Allows the user to pan the map using keyboard arrows.
@@ -93,7 +88,7 @@ ol.interaction.KeyboardPan.prototype.handleMapBrowserEvent =
       var delta = [deltaX, deltaY];
       ol.coordinate.rotate(delta, view2DState.rotation);
       ol.interaction.Interaction.pan(
-          map, view, delta, ol.interaction.KEYBOARD_PAN_DURATION);
+          map, view, delta, ol.KEYBOARD_PAN_DURATION);
       mapBrowserEvent.preventDefault();
       stopEvent = true;
     }