Add ol.Projection.getPointResolution

src/ol/projection.exports

@@ -2,6 +2,7 @@
 @exportProperty ol.Projection.prototype.getAxisOrientation
 @exportProperty ol.Projection.prototype.getCode
 @exportProperty ol.Projection.prototype.getExtent
+@exportProperty ol.Projection.prototype.getPointResolution
 @exportProperty ol.Projection.prototype.getUnits
 
 @exportSymbol ol.ProjectionUnits

src/ol/projection.js

@@ -85,6 +85,14 @@ ol.Projection.prototype.getExtent = function() {
 };
 
 
+/**
+ * @param {number} resolution Resolution.
+ * @param {ol.Coordinate} point Point.
+ * @return {number} Point resolution.
+ */
+ol.Projection.prototype.getPointResolution = goog.abstractMethod;
+
+
 /**
  * @return {ol.ProjectionUnits} Units.
  */