[File Manager] Cleanup: Moving js/css/html files to dedicated directories

chrome/browser/resources/file_manager/js/file_manager.js

 // Copyright (c) 2012 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.
 
 // Setting the src of an img to an empty string can crash the browser, so we
 // use an empty 1x1 gif instead.
 const EMPTY_IMAGE_URI = 'data:image/gif;base64,'
         + 'R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw%3D%3D';
 
 /**
@@ skipping 2510 matching lines @@
           selectedUrl,
           function(name) {
             self.updateLocation_(true /*replace*/, dirPath + '/' + name);
           },
           function () { history.back(1) },
           self.metadataProvider_,
           shareActions,
           str);
     };
 
-    galleryFrame.src = 'js/image_editor/gallery.html';
+    galleryFrame.src = 'gallery.html';
     this.openFilePopup_(galleryFrame);
   };
 
   /**
    * Update the breadcrumb display to reflect the current directory.
    */
   FileManager.prototype.updateBreadcrumbs_ = function() {
     var bc = this.dialogDom_.querySelector('.breadcrumbs');
     removeChildren(bc);
 
@@ skipping 1390 matching lines @@
           });
       }, onError);
 
       function onError(err) {
         console.log('Error while checking free space: ' + err);
         setTimeout(doCheck, 1000 * 60);
       }
     }
   }
 })();