First step to move common accessibility code out of content.

ui/ui.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     'ui_resources.gypi',
@@ skipping 20 matching lines @@
         'ui_resources',
       ],
       'defines': [
         'UI_IMPLEMENTATION',
       ],
       'export_dependent_settings': [
         '../net/net.gyp:net',
         'gfx/gfx.gyp:gfx',
       ],
       'sources' : [
+        'accessibility/ax_enums.h',
+        'accessibility/ax_node.cc',
+        'accessibility/ax_node_data.cc',
+        'accessibility/ax_node_data.h',
+        'accessibility/ax_node.h',
+        'accessibility/ax_serializable_tree.cc',
+        'accessibility/ax_serializable_tree.h',
+        'accessibility/ax_tree.cc',
+        'accessibility/ax_tree.h',
+        'accessibility/ax_tree_serializer.cc',
+        'accessibility/ax_tree_serializer.h',
+        'accessibility/ax_tree_source.h',
+        'accessibility/ax_tree_update.cc',
+        'accessibility/ax_tree_update.h',
         'base/accelerators/accelerator.cc',
         'base/accelerators/accelerator.h',
         'base/accelerators/accelerator_manager.cc',
         'base/accelerators/accelerator_manager.h',
         'base/accelerators/menu_label_accelerator_util_linux.cc',
         'base/accelerators/menu_label_accelerator_util_linux.h',
         'base/accelerators/platform_accelerator.h',
         'base/accelerators/platform_accelerator_cocoa.h',
         'base/accelerators/platform_accelerator_cocoa.mm',
         'base/accelerators/platform_accelerator_gtk.cc',
@@ skipping 656 matching lines @@
               'xcode_settings': {
                 'GCC_SYMBOLS_PRIVATE_EXTERN': 'NO',
               },
             }],
           ],
         },
       ],
     }],
   ],
 }