Ensure that the viewer loads even if there are errors when the preferences are read

web/hand_tool.js

@@ -45,11 +45,11 @@ var HandTool = {
       toggleHandTool.addEventListener('click', this.toggle.bind(this), false);
 
       window.addEventListener('localized', function (evt) {
-        Preferences.get('enableHandToolOnLoad').then(function (prefValue) {
+        Preferences.get('enableHandToolOnLoad').then(function resolved(value) {
-          if (prefValue) {
+          if (value) {
             this.handTool.activate();
           }
-        }.bind(this));
+        }.bind(this), function rejected(reason) {});
       }.bind(this));
     }
   },

web/viewer.js

@@ -222,9 +222,9 @@ var PDFView = {
     }, false);
 
     var initializedPromise = Promise.all([
-      Preferences.get('enableWebGL').then(function (value) {
+      Preferences.get('enableWebGL').then(function resolved(value) {
         PDFJS.disableWebGL = !value;
-      })
+      }, function rejected(reason) {})
       // TODO move more preferences and other async stuff here
     ]);
 
@@ -1042,8 +1042,8 @@ var PDFView = {
 //      self.container.blur();
 //#endif
       }
-    }, function rejected(errorMsg) {
+    }, function rejected(reason) {
-      console.error(errorMsg);
+      console.error(reason);
 
       firstPagePromise.then(function () {
         self.setInitialView(null, scale);