Experimental alignment layout manager using state retained in the layout manager

ui/views/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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/ozone/ozone.gni")
 
 config("flags") {
@@ skipping 260 matching lines @@
     "focus/focus_manager_factory.cc",
     "focus/focus_manager_factory.h",
     "focus/focus_search.cc",
     "focus/focus_search.h",
     "focus/view_storage.cc",
     "focus/view_storage.h",
     "focus/widget_focus_manager.cc",
     "focus/widget_focus_manager.h",
     "layout/align_layout.cc",
     "layout/align_layout.h",
+    "layout/align_layout_state.cc",
+    "layout/align_layout_state.h",
     "layout/box_layout.cc",
     "layout/box_layout.h",
     "layout/fill_layout.cc",
     "layout/fill_layout.h",
     "layout/grid_layout.cc",
     "layout/grid_layout.h",
     "layout/layout_constants.h",
     "layout/layout_manager.cc",
     "layout/layout_manager.h",
     "linux_ui/linux_ui.cc",
@@ skipping 559 matching lines @@
     "controls/tabbed_pane/tabbed_pane_unittest.cc",
     "controls/table/table_utils_unittest.cc",
     "controls/table/table_view_unittest.cc",
     "controls/table/test_table_model.cc",
     "controls/table/test_table_model.h",
     "controls/textfield/textfield_model_unittest.cc",
     "controls/tree/tree_view_unittest.cc",
     "event_monitor_unittest.cc",
     "focus/focus_manager_unittest.cc",
     "focus/focus_traversal_unittest.cc",
+    "layout/align_layout_state_unittest.cc",
     "layout/align_layout_unittest.cc",
+    "layout/anchor_layout_state_unittest.cc",
     "layout/anchor_layout_unittest.cc",
     "layout/box_layout_unittest.cc",
     "layout/grid_layout_unittest.cc",
     "rect_based_targeting_utils_unittest.cc",
     "view_model_unittest.cc",
     "view_model_utils_unittest.cc",
     "view_targeter_unittest.cc",
     "view_unittest.cc",
     "widget/native_widget_mac_accessibility_unittest.mm",
     "widget/native_widget_mac_unittest.mm",
@@ skipping 152 matching lines @@
       "//ui/base:test_support",
       "//ui/compositor",
       "//ui/events:test_support",
       "//ui/gl:test_support",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
     ]
   }
 }