This patch implements Chromium's Aura gesture recognizer in terms of utouch-grail and utouch-frame …

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',
   ],
   'targets': [
     {
       'target_name': 'ui',
       'type': '<(component)',
       'variables': { 'enable_wexit_time_destructors': 1, },
       'includes': [
         'base/ime/ime.gypi',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         '../base/base.gyp:base_i18n',
         '../base/base.gyp:base_static',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
+        '../third_party/utouch-frame/utouch-frame.gyp:utouch-frame',
+        '../third_party/utouch-grail/utouch-grail.gyp:utouch-grail',
         '../build/temp_gyp/googleurl.gyp:googleurl',
         '../net/net.gyp:net',
         '../skia/skia.gyp:skia',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
         '../third_party/libpng/libpng.gyp:libpng',
         '../third_party/zlib/zlib.gyp:zlib',
         'base/strings/ui_strings.gyp:ui_strings',
         'gfx_resources',
         '<(libjpeg_gyp_path):libjpeg',
@@ skipping 169 matching lines @@
         'base/resource/resource_bundle_posix.cc',
         'base/resource/resource_bundle_win.cc',
         'base/text/bytes_formatting.cc',
         'base/text/bytes_formatting.h',
         'base/text/text_elider.cc',
         'base/text/text_elider.h',
         'base/text/utf16_indexing.cc',
         'base/text/utf16_indexing.h',
         'base/theme_provider.cc',
         'base/theme_provider.h',
+        'base/touch/axis.cc',
+        'base/touch/axis.h',
+        'base/touch/multi_touch_device.cc',
+        'base/touch/multi_touch_device.h',
+        'base/touch/multi_touch_device_x11.cc',
+        'base/touch/multi_touch_device_x11.h',
         'base/touch/touch_factory.cc',
         'base/touch/touch_factory.h',
         'base/ui_base_exports.cc',
         'base/ui_base_paths.cc',
         'base/ui_base_paths.h',
         'base/ui_base_switches.cc',
         'base/ui_base_switches.h',
         'base/ui_base_types.h',
         'base/ui_export.h',
         'base/view_prop.cc',
@@ skipping 173 matching lines @@
             ['exclude', 'base/x/work_area_watcher_x.cc'],
             ['exclude', 'base/x/work_area_watcher_x.h'],
             ['exclude', 'base/x/work_area_watcher_x_observer.h'],
            ],
         }, {  # use_aura!=1
           'sources!': [
             'gfx/native_theme_aura.cc',
             'gfx/native_theme_aura.h',
           ]
         }],
+        ['use_utouch==1', {
+          'defines' : ['USE_UTOUCH'],
+        }, { #use_utouch!=1
+          'dependencies!': [
+#            '../build/linux/system.gyp:utouch_frame',
+#           '../build/linux/system.gyp:utouch_grail',
+            '../third_party/utouch-frame/utouch-frame.gyp:utouch-frame',
+            '../third_party/utouch-grail/utouch-grail.gyp:utouch-grail',
+          ],
+        }],
         ['use_aura==1 and OS=="win"', {
           'sources/': [
             ['exclude', 'base/dragdrop/os_exchange_data_provider_win.cc'],
             ['exclude', 'base/dragdrop/os_exchange_data_provider_win.h'],
             ['exclude', 'gfx/native_theme_win.cc'],
             ['exclude', 'gfx/native_theme_win.h'],
             ['exclude', 'gfx/path_win.cc'],
           ],
         }],
         ['use_ibus==1', {
@@ skipping 277 matching lines @@
                 'shutil.copyfile(\'<(ui_copy_target)\', \'<(ui_copy_dest)\'); ' \
                 'os.chmod(\'<(ui_copy_dest)\', 0700)'
               ]
             }
           ],
         },
       ],
     }],
   ],
 }