Add text replay skeleton

src/ol/render/canvas/canvasimmediate.js

@@ -293,6 +293,12 @@ ol.render.canvas.Immediate.prototype.setImageStyle = function(imageStyle) {
 };
 
 
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.Immediate.prototype.setTextStyle = goog.abstractMethod;
+
+
 /**
  * @const
  * @private

src/ol/render/canvas/canvasreplay.js

@@ -232,6 +232,12 @@ ol.render.canvas.Replay.prototype.setFillStrokeStyle = goog.abstractMethod;
 ol.render.canvas.Replay.prototype.setImageStyle = goog.abstractMethod;
 
 
+/**
+ * @inheritDoc
+ */
+ol.render.canvas.Replay.prototype.setTextStyle = goog.abstractMethod;
+
+
 
 /**
  * @constructor