Hookup the page-indicator and progress-bar elements in the PDF extension.

chrome/browser/resources/pdf/viewport.js

Index: chrome/browser/resources/pdf/viewport.js
diff --git a/chrome/browser/resources/pdf/viewport.js b/chrome/browser/resources/pdf/viewport.js
index 69264682a0148c8a926a813f0869ba0db9fd7a19..5a9e044eb4c7adb52dbc8da0c0bb28ec4df3f691 100644
--- a/chrome/browser/resources/pdf/viewport.js
+++ b/chrome/browser/resources/pdf/viewport.js
@@ -127,11 +127,13 @@ Viewport.prototype.setZoom = function(newZoom) {
 Viewport.prototype.updateViewport_ = function() {
   // Shift the toolbar so that it doesn't move when the scrollbars display
   var needsScrollbars = this.documentHasScrollbars();
+  var page = this.getMostVisiblePage();
   this.viewportChangedCallback_(this.zoom_,
                                 this.window_.pageXOffset,
                                 this.window_.pageYOffset,
                                 this.scrollbarWidth_,
-                                needsScrollbars);
+                                needsScrollbars,
+                                page);
 };
 
 /**