[filemanager] In Gallery, do not allow to rename files in readonly directory.

chrome/browser/resources/file_manager/js/image_editor/gallery.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.
 
 /*
  * Base class that Ribbon uses to display photos.
  */
 
 function RibbonClient() {}
 
@@ skipping 467 matching lines @@
   }
 
   this.context_.onNameChange(fullName);
 
   var displayName = ImageUtil.getFileNameFromFullName(fullName);
   this.filenameEdit_.value = displayName;
   this.filenameText_.textContent = displayName;
 };
 
 Gallery.prototype.onFilenameClick_ = function() {
+  // We can't rename files in readonly directory.
+  if (this.context_.readonlyDirName)
+    return;
+
   ImageUtil.setAttribute(this.filenameSpacer_, 'renaming', true);
   setTimeout(this.filenameEdit_.select.bind(this.filenameEdit_), 0);
   this.cancelFading_();
 };
 
 Gallery.prototype.onFilenameEditBlur_ = function() {
   if (this.filenameEdit_.value && this.filenameEdit_.value[0] == '.') {
     this.editor_.getPrompt().show('file_hidden_name', 5000);
     this.filenameEdit_.focus();
     return;
@@ skipping 991 matching lines @@
 ShareMode.prototype.setUp = function() {
   ImageEditor.Mode.prototype.setUp.apply(this, arguments);
   ImageUtil.setAttribute(this.menu_, 'hidden', false);
   ImageUtil.setAttribute(this.button_, 'pressed', false);
 };
 
 ShareMode.prototype.cleanUpUI = function() {
   ImageEditor.Mode.prototype.cleanUpUI.apply(this, arguments);
   ImageUtil.setAttribute(this.menu_, 'hidden', true);
 };