Add RenderText DirectionalityMode enum and support; etc.

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 433 matching lines @@
         'gfx/size_f.cc',
         'gfx/size_f.h',
         'gfx/skbitmap_operations.cc',
         'gfx/skbitmap_operations.h',
         'gfx/skia_util.cc',
         'gfx/skia_util.h',
         'gfx/skia_utils_gtk.cc',
         'gfx/skia_utils_gtk.h',
         'gfx/sys_color_change_listener.cc',
         'gfx/sys_color_change_listener.h',
+        'gfx/text_constants.h',
         'gfx/transform.cc',
         'gfx/transform.h',
         'gfx/transform_util.cc',
         'gfx/transform_util.h',
         'gfx/video_decode_acceleration_support_mac.h',
         'gfx/video_decode_acceleration_support_mac.mm',
         'ui_controls/ui_controls.h',
         'ui_controls/ui_controls_aura.cc',
         'ui_controls/ui_controls_internal_win.h',
         'ui_controls/ui_controls_internal_win.cc',
@@ skipping 294 matching lines @@
                 'shutil.copyfile(\'<(ui_copy_target)\', \'<(ui_copy_dest)\'); ' \
                 'os.chmod(\'<(ui_copy_dest)\', 0700)'
               ]
             }
           ],
         },
       ],
     }],
   ],
 }