Refactors draw method in PDFPageView; makes optional some PDFPageViewOptions options

web/text_layer_builder.js

@@ -385,3 +385,24 @@ var TextLayerBuilder = (function TextLayerBuilderClosure() {
   };
   return TextLayerBuilder;
 })();
+
+/**
+ * @constructor
+ * @implements IPDFTextLayerFactory
+ */
+function DefaultTextLayerFactory() {}
+DefaultTextLayerFactory.prototype = {
+  /**
+   * @param {HTMLDivElement} textLayerDiv
+   * @param {number} pageIndex
+   * @param {PageViewport} viewport
+   * @returns {TextLayerBuilder}
+   */
+  createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport) {
+    return new TextLayerBuilder({
+      textLayerDiv: textLayerDiv,
+      pageIndex: pageIndex,
+      viewport: viewport
+    });
+  }
+};