Move preview panel's components to toolbar and footer.

ui/file_manager/file_manager/foreground/js/ui/preview_panel_unittest.js

Index: ui/file_manager/file_manager/foreground/js/ui/preview_panel_unittest.js
diff --git a/ui/file_manager/file_manager/foreground/js/ui/preview_panel_unittest.js b/ui/file_manager/file_manager/foreground/js/ui/preview_panel_unittest.js
deleted file mode 100644
index f3e8a1c712eb221254d46b8ca7fecaa0f904e72e..0000000000000000000000000000000000000000
--- a/ui/file_manager/file_manager/foreground/js/ui/preview_panel_unittest.js
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright 2015 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.
-
-/**
- * Mock ThumbnailLoader.FillMode
- */
-var ThumbnailLoader = {
-  FillMode: {
-  }
-};
-
-/**
- * Mock FileGrid.
- */
-var FileGrid = {
-  ThumbnailQuality: {},
-  decorateThumbnailBox: function(
-      box,
-      entry,
-      metadataCache,
-      volumeManager,
-      historyLoader,
-      fillMode,
-      quality,
-      animation,
-      opt_callback) {
-    var imageContainer = document.createElement('div');
-    imageContainer.classList.add('img-container');
-    box.appendChild(imageContainer);
-    var image = new Image();
-    image.width = 500;
-    image.height = 500;
-    if (opt_callback)
-      opt_callback(image);
-  }
-};
-
-function testPreviewThumbnail() {
-  var element = document.createElement('div');
-  var mockFileSystem = new MockFileSystem('volumeId');
-  var mockEntry = new MockFileEntry(mockFileSystem, '/test.jpg');
-  var thumbnailUI = new PreviewPanel.Thumbnails(element);
-  thumbnailUI.selection = {entries: [mockEntry]};
-  thumbnailUI.selection = {entries: [mockEntry]};
-  // Multiple updates of selection do not create multiple popup images.
-  assertEquals(1, element.querySelectorAll('.popup').length);
-}