Add selectScaleOption function back, that seems to got lost during rebaseing

web/viewer.js

@@ -1045,20 +1045,9 @@ window.addEventListener('change', function webViewerChange(evt) {
   document.getElementById('download').setAttribute('hidden', 'true');
 }, true);
 
-window.addEventListener('scalechange', function scalechange(evt) {
-  var customScaleOption = document.getElementById('customScaleOption');
-  customScaleOption.selected = false;
-
-  if (!evt.resetAutoSettings &&
-       (document.getElementById('pageWidthOption').selected ||
-        document.getElementById('pageFitOption').selected)) {
-      updateViewarea();
-      return;
-  }
-
+function selectScaleOption(value) {
   var options = document.getElementById('scaleSelect').options;
   var predefinedValueFound = false;
-  var value = '' + evt.scale;
   for (var i = 0; i < options.length; i++) {
     var option = options[i];
     if (option.value != value) {
@@ -1068,7 +1057,21 @@ window.addEventListener('scalechange', function scalechange(evt) {
     option.selected = true;
     predefinedValueFound = true;
   }
+  return predefinedValueFound;
+}
+
+window.addEventListener('scalechange', function scalechange(evt) {
+  var customScaleOption = document.getElementById('customScaleOption');
+  customScaleOption.selected = false;
+
+  if (!evt.resetAutoSettings &&
+       (document.getElementById('pageWidthOption').selected ||
+        document.getElementById('pageFitOption').selected)) {
+      updateViewarea();
+      return;
+  }
 
+  var predefinedValueFound =  selectScaleOption('' + evt.scale);
   if (!predefinedValueFound) {
     customScaleOption.textContent = Math.round(evt.scale * 10000) / 100 + '%';
     customScaleOption.selected = true;