[filemanager] New visuals for file name, saved and overwrite original UI elemetns in image editor.

chrome/browser/resources/file_manager/js/mock_chrome.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.
 
 function MockEventSource() {
   this.listeners_ = [];
 }
 
 MockEventSource.prototype.addListener = function(listener) {
   this.listeners_.push(listener);
@@ skipping 389 matching lines @@
       GALLERY_CONTRAST: 'Contrast',
       GALLERY_ROTATE_LEFT: 'Left',
       GALLERY_ROTATE_RIGHT: 'Right',
       GALLERY_ENTER_WHEN_DONE: 'Press Enter when done',
       GALLERY_UNDO: 'Undo',
       GALLERY_REDO: 'Redo',
       GALLERY_FILE_EXISTS: 'File already exists',
       GALLERY_FILE_HIDDEN_NAME: 'Names starting with dot are reserved ' +
           'for the system. Please choose another name.',
       GALLERY_SAVED: 'Saved',
-      GALLERY_KEEP_ORIGINAL: 'Keep original',
+      GALLERY_OVERWRITE_ORIGINAL: 'Overwrite original',
       GALLERY_UNSAVED_CHANGES: 'Changes are not saved yet.',
       GALLERY_READONLY_WARNING: '$1 is read only. Edited images will be saved in the Downloads folder.',
       GALLERY_IMAGE_ERROR: 'This file could not be displayed',
       GALLERY_VIDEO_ERROR: 'This file could not be played',
       AUDIO_ERROR: 'This file could not be played',
 
       CONFIRM_OVERWRITE_FILE: 'A file named "$1" already exists. Do you want to replace it?',
       FILE_ALREADY_EXISTS: 'The file named "$1" already exists. Please choose a different name.',
       DIRECTORY_ALREADY_EXISTS: 'The folder named "$1" already exists. Please choose a different name.',
       ERROR_RENAMING: 'Unable to rename "$1": $2',
@@ skipping 183 matching lines @@
 
   setWindowHeight: function(height) {
     this.popup_.style.height = height + 'px';
   },
 
   closeWindow: function() {
     this.popup_.parentNode.removeChild(this.popup_);
     this.popup_ = null;
   }
 };