Remove unused globals and updateViewarea function from viewer.js

web/viewer.js

@@ -20,10 +20,10 @@
            PDFThumbnailViewer, URL, noContextMenuHandler, SecondaryToolbar,
            PasswordPrompt, PDFPresentationMode, PDFDocumentProperties, HandTool,
            Promise, PDFLinkService, PDFOutlineView, PDFAttachmentView,
-           OverlayManager, PDFFindController, PDFFindBar, getVisibleElements,
+           OverlayManager, PDFFindController, PDFFindBar, PDFViewer,
-           watchScroll, PDFViewer, PDFRenderingQueue, PresentationModeState,
+           PDFRenderingQueue, PresentationModeState, parseQueryString,
-           parseQueryString, RenderingStates, UNKNOWN_SCALE,
+           RenderingStates, UNKNOWN_SCALE, DEFAULT_SCALE_VALUE,
-           DEFAULT_SCALE_VALUE, IGNORE_CURRENT_POSITION_ON_ZOOM: true */
+           IGNORE_CURRENT_POSITION_ON_ZOOM: true */
 
 'use strict';
 
@@ -1591,13 +1591,6 @@ window.addEventListener('presentationmodechanged', function (e) {
     active ? PresentationModeState.FULLSCREEN : PresentationModeState.NORMAL;
 });
 
-function updateViewarea() {
-  if (!PDFViewerApplication.initialized) {
-    return;
-  }
-  PDFViewerApplication.pdfViewer.update();
-}
-
 window.addEventListener('updateviewarea', function (evt) {
   if (!PDFViewerApplication.initialized) {
     return;
@@ -1650,8 +1643,8 @@ window.addEventListener('resize', function webViewerResize(evt) {
       // (E.g. the document being rendered with the wrong scale on load.)
       PDFViewerApplication.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
     }
+    PDFViewerApplication.pdfViewer.update();
   }
-  updateViewarea();
 
   // Set the 'max-height' CSS property of the secondary toolbar.
   SecondaryToolbar.setMaxHeight(document.getElementById('viewerContainer'));
@@ -1759,7 +1752,10 @@ window.addEventListener('scalechange', function scalechange(evt) {
       mozL10n.get('page_scale_percent', { scale: customScale }, '{{scale}}%');
     customScaleOption.selected = true;
   }
-  updateViewarea();
+  if (!PDFViewerApplication.initialized) {
+    return;
+  }
+  PDFViewerApplication.pdfViewer.update();
 }, true);
 
 window.addEventListener('pagechange', function pagechange(evt) {