fix image scaling in pdf.js

static/pdf.js

@@ -16,8 +16,8 @@
  */
 
 var PDFJS = {};
-PDFJS.version = '0.7.226';
-PDFJS.build = 'c40c594';
+PDFJS.version = '0.7.227';
+PDFJS.build = 'c33b920';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -72,7 +72,11 @@ function getPdf(arg, callback) {
   var params = arg;
   if (typeof arg === 'string')
     params = { url: arg };
+//#if !B2G
   var xhr = new XMLHttpRequest();
+//#else
+//var xhr = new XMLHttpRequest({mozSystem: true});
+//#endif
   xhr.open('GET', params.url);
 
   var headers = params.headers;
@@ -3287,15 +3291,13 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
                     0, -h, w, h);
       if (this.imageLayer) {
         var currentTransform = ctx.mozCurrentTransformInverse;
-        var widthScale = Math.max(Math.abs(currentTransform[0]), 1);
-        var heightScale = Math.max(Math.abs(currentTransform[3]), 1);
         var position = this.getCanvasPosition(0, 0);
         this.imageLayer.appendImage({
           objId: objId,
           left: position[0],
           top: position[1],
-          width: w / widthScale,
-          height: h / heightScale
+          width: w / currentTransform[0],
+          height: h / currentTransform[3]
         });
       }
       this.restore();
@@ -3403,8 +3405,8 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
           imgData: imgData,
           left: position[0],
           top: position[1],
-          width: width / widthScale,
-          height: height / heightScale
+          width: width / currentTransform[0],
+          height: height / currentTransform[3]
         });
       }
       this.restore();
@@ -16010,6 +16012,7 @@ function mapPrivateUseChars(code) {
 }
 
 var FontLoader = {
+//#if !(MOZCENTRAL)
   loadingContext: {
     requests: [],
     nextRequestId: 0
@@ -16206,6 +16209,22 @@ var FontLoader = {
       document.body.appendChild(frame);
       /** Hack end */
   }
+//#else
+//bind: function fontLoaderBind(fonts, callback) {
+//  assert(!isWorker, 'bind() shall be called from main thread');
+//
+//  for (var i = 0, ii = fonts.length; i < ii; i++) {
+//    var font = fonts[i];
+//    if (font.attached)
+//      continue;
+//
+//    font.attached = true;
+//    font.bindDOM()
+//  }
+//
+//  setTimeout(callback);
+//}
+//#endif
 };
 
 var UnicodeRanges = [
@@ -38066,4 +38085,3 @@ var JpegImage = (function jpegImage() {
 
 }).call((typeof window === 'undefined') ? this : window);
 
-