App list: Added contents view custom animation framework.

ui/app_list/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/ui.gni")
 
 component("app_list") {
   sources = [
     "app_list_constants.cc",
     "app_list_constants.h",
@@ skipping 103 matching lines @@
       "views/app_list_view.h",
       "views/app_list_view_observer.h",
       "views/apps_grid_view.cc",
       "views/apps_grid_view.h",
       "views/apps_grid_view_delegate.h",
       "views/apps_grid_view_folder_delegate.h",
       "views/cached_label.cc",
       "views/cached_label.h",
       "views/contents_switcher_view.cc",
       "views/contents_switcher_view.h",
+      "views/contents_animator.cc",
+      "views/contents_animator.h",
       "views/contents_view.cc",
       "views/contents_view.h",
       "views/folder_background_view.cc",
       "views/folder_background_view.h",
       "views/folder_header_view.cc",
       "views/folder_header_view.h",
       "views/folder_header_view_delegate.h",
       "views/page_switcher.cc",
       "views/page_switcher.h",
       "views/progress_bar_view.cc",
@@ skipping 111 matching lines @@
     "//ui/gl",
     "//ui/resources",
     "//ui/resources:ui_test_pak",
   ]
 
   if (toolkit_views) {
     sources += [
       "views/app_list_main_view_unittest.cc",
       "views/app_list_view_unittest.cc",
       "views/apps_grid_view_unittest.cc",
+      "views/contents_view_unittest.cc",
       "views/folder_header_view_unittest.cc",
       "views/search_box_view_unittest.cc",
       "views/search_result_list_view_unittest.cc",
       "views/speech_view_unittest.cc",
       "views/test/apps_grid_view_test_api.cc",
       "views/test/apps_grid_view_test_api.h",
     ]
     deps += [
       "//ui/views",
       "//ui/views:test_support",
     ]
   }
 
   if (is_mac) {
     sources += [
       "cocoa/app_list_view_controller_unittest.mm",
       "cocoa/app_list_window_controller_unittest.mm",
       "cocoa/apps_grid_controller_unittest.mm",
       "cocoa/apps_search_box_controller_unittest.mm",
       "cocoa/apps_search_results_controller_unittest.mm",
       "cocoa/test/apps_grid_controller_test_helper.h",
       "cocoa/test/apps_grid_controller_test_helper.mm",
     ]
   }
 }