Merge pull request #8531 from Snuffleupagus/rm-updatePosition

Remove `PDFPageView.updatePosition` since it's not actually necessary

web/pdf_page_view.js

@@ -255,15 +255,6 @@ class PDFPageView {
     }
   }
 
-  /**
-   * Called when moved in the parent's container.
-   */
-  updatePosition() {
-    if (this.textLayer) {
-      this.textLayer.render(TEXT_LAYER_RENDER_DELAY);
-    }
-  }
-
   cssTransform(target, redrawAnnotations = false) {
     // Scale target (canvas or svg), its wrapper and page container.
     let width = this.viewport.width;

web/pdf_viewer.js

@@ -452,14 +452,11 @@ var PDFViewer = (function pdfViewer() {
       this.viewer.textContent = '';
     },
 
-    _scrollUpdate: function PDFViewer_scrollUpdate() {
+    _scrollUpdate() {
       if (this.pagesCount === 0) {
         return;
       }
       this.update();
-      for (var i = 0, ii = this._pages.length; i < ii; i++) {
-        this._pages[i].updatePosition();
-      }
     },
 
     _setScaleDispatchEvent: function pdfViewer_setScaleDispatchEvent(