Fix lint warnings.

And name anonymous functions.

examples/helloworld/hello.js

@@ -7,7 +7,7 @@
 
 'use strict';
 
-getPdf('helloworld.pdf', function(data){  
+getPdf('helloworld.pdf', function getPdfHelloWorld(data) {
   //
   // Instantiate PDFDoc with PDF data
   //

pdf.js

@@ -130,7 +130,7 @@ function getPdf(arg, callback) {
   xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
   xhr.onprogress = params.progress || undefined;
 
-  xhr.onreadystatechange = function() {
+  xhr.onreadystatechange = function getPdfOnreadystatechange() {
     var data;
     if (xhr.readyState === 4 && xhr.status === xhr.expected) {
       data = (xhr.mozResponseArrayBuffer || xhr.mozResponse ||
@@ -4965,7 +4965,7 @@ var CanvasGraphics = (function canvasGraphics() {
       if (IsDict(extGState) && extGState.has(dictName.name)) {
         var gsState = this.xref.fetchIfRef(extGState.get(dictName.name));
         var self = this;
-        gsState.forEach(function(key, value) {
+        gsState.forEach(function canvasGraphicsSetGStateForEach(key, value) {
           switch (key) {
             case 'Type':
               break;

test/driver.js

@@ -73,7 +73,7 @@ function nextTask() {
 
   log('Loading file "' + task.file + '"\n');
 
-  getPdf(task.file, function(data){
+  getPdf(task.file, function nextTaskGetPdf(data) {
     var failure;
     try {
       task.pdfDoc = new PDFDoc(data);

web/viewer.js

@@ -107,7 +107,7 @@ var PDFView = {
 
     document.title = url;
 
-    getPdf({url:url, progress:PDFView.progressLevel}, function(data) {
+    getPdf({url: url, progress: PDFView.progressLevel}, function(data) {
       document.getElementById('loading').style.display = 'none';
       PDFView.load(data, scale);
     });