ozone: Add initial build support for xkbcommon

build/common.gypi

 # 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 688 matching lines @@
           'use_cairo%': 1,
         }],
 
         # DBus usage.
         ['OS=="linux" and embedded==0', {
           'use_dbus%': 1,
         }, {
           'use_dbus%': 0,
         }],
 
+        # Libxkbcommon usage.
+        ['use_ozone==1 and embedded==0', {
+          'use_xkbcommon%': 1,
+        }, {
+          'use_xkbcommon%': 0,
+        }],
+
         # We always use skia text rendering in Aura on Windows, since GDI
         # doesn't agree with our BackingStore.
         # TODO(beng): remove once skia text rendering is on by default.
         ['use_aura==1 and OS=="win"', {
           'enable_skia_text%': 1,
         }],
 
         # A flag to enable or disable our compile-time dependency
         # on gnome-keyring. If that dependency is disabled, no gnome-keyring
         # support will be available. This option is useful
@@ skipping 361 matching lines @@
     'use_nss%': '<(use_nss)',
     'use_udev%': '<(use_udev)',
     'os_bsd%': '<(os_bsd)',
     'os_posix%': '<(os_posix)',
     'use_dbus%': '<(use_dbus)',
     'use_glib%': '<(use_glib)',
     'use_pango%': '<(use_pango)',
     'use_cairo%': '<(use_cairo)',
     'use_ozone%': '<(use_ozone)',
     'use_ozone_evdev%': '<(use_ozone_evdev)',
+    'use_xkbcommon%': '<(use_xkbcommon)',
     'use_clipboard_aurax11%': '<(use_clipboard_aurax11)',
     'desktop_linux%': '<(desktop_linux)',
     'use_x11%': '<(use_x11)',
     'use_gnome_keyring%': '<(use_gnome_keyring)',
     'linux_fpic%': '<(linux_fpic)',
     'chromeos%': '<(chromeos)',
     'chromecast%': '<(chromecast)',
     'enable_viewport%': '<(enable_viewport)',
     'enable_hidpi%': '<(enable_hidpi)',
     'image_loader_extension%': '<(image_loader_extension)',
@@ skipping 4738 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }