Add window buttons (close and maximize) to the Files.app's new UI.

chrome/browser/resources/file_manager/js/file_tasks.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.
 
 'use strict';
 
 /**
  * This object encapsulates everything related to tasks execution.
  *
  * @param {FileManager} fileManager FileManager instance.
@@ skipping 489 matching lines @@
         true /* replace */, null /* keep path */, '' /* remove search. */);
   }
 
   var savedAppState = window.appState;
   var savedTitle = document.title;
 
   // Push a temporary state which will be replaced every time the selection
   // changes in the Gallery and popped when the Gallery is closed.
   util.updateAppState(false /*push*/);
 
-  var onClose = function(selectedUrls) {
+  var onBack = function(selectedUrls) {
     fm.directoryModel_.selectUrls(selectedUrls);
     if (util.platform.v2()) {
       fm.closeFilePopup_();  // Will call Gallery.unload.
       window.appState = savedAppState;
       util.saveAppState();
       document.title = savedTitle;
     } else {
       window.history.back(1);  // This will restore document.title.
     }
   };
 
+  var onClose = function() {
+    fm.onClose();
+  };
+
+  var onMaximize = function() {
+    fm.onMaximize();
+  };
+
   galleryFrame.onload = function() {
     fm.show_();
     galleryFrame.contentWindow.ImageUtil.metrics = metrics;
     window.galleryTestAPI = galleryFrame.contentWindow.galleryTestAPI;
 
     // TODO(haruki): isOnReadonlyDirectory() only checks the permission for the
     // root. We should check more granular permission to know whether the file
     // is writable or not.
     var readonly = fm.isOnReadonlyDirectory();
     var currentDir = fm.directoryModel_.getCurrentDirEntry();
     var downloadsDir = fm.directoryModel_.getRootsList().item(0);
     var readonlyDirName = null;
     if (readonly) {
       readonlyDirName = fm.isOnDrive() ?
           PathUtil.getRootLabel(PathUtil.getRootPath(currentDir.fullPath)) :
           fm.directoryModel_.getCurrentRootName();
     }
 
     var context = {
       // We show the root label in readonly warning (e.g. archive name).
       readonlyDirName: readonlyDirName,
       curDirEntry: currentDir,
       saveDirEntry: readonly ? downloadsDir : null,
       searchResults: fm.directoryModel_.isSearching(),
       metadataCache: fm.metadataCache_,
       pageState: this.params_,
+      onBack: onBack,
       onClose: onClose,
+      onMaximize: onMaximize,
       onThumbnailError: function(imageURL) {
         fm.metadataCache_.refreshFileMetadata(imageURL);
       },
       displayStringFunction: strf
     };
     galleryFrame.contentWindow.Gallery.open(context, allUrls, urls);
   }.bind(this);
 
   galleryFrame.src = 'gallery.html';
   fm.openFilePopup_(galleryFrame, fm.updateTitle_.bind(fm));
@@ skipping 133 matching lines @@
       items, defaultIdx,
       function(item) {
         onSuccess(item.task);
       });
 };
 
 FileTasks.decorate('display');
 FileTasks.decorate('updateMenuItem');
 FileTasks.decorate('execute');
 FileTasks.decorate('executeDefault');