[cros] Initial user image loading and repeated profile image loading fixes.

chrome/browser/resources/options/chromeos/change_picture_options.js

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('options', function() {
 
   var OptionsPage = options.OptionsPage;
   var UserImagesGrid = options.UserImagesGrid;
   var ButtonImages = UserImagesGrid.ButtonImages;
 
@@ skipping 52 matching lines @@
 
       // Old user image data (if present).
       this.oldImage_ = null;
     },
 
     /**
      * Called right after the page has been shown to user.
      */
     didShowPage: function() {
       $('images-grid').updateAndFocus();
-      chrome.send('getSelectedImage');
+      chrome.send('onPageShown');
     },
 
     /**
      * Called right before the page is hidden.
      */
     willHidePage: function() {
       if (this.oldImage_) {
         $('images-grid').removeItem(this.oldImage_);
         this.oldImage_ = null;
       }
@@ skipping 157 matching lines @@
     };
   });
 
   // Export
   return {
     ChangePictureOptions: ChangePictureOptions
   };
 
 });