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

build/linux/system.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.
 
 {
   'conditions': [
     ['sysroot!=""', {
       'variables': {
         'pkg-config': './pkg-config-wrapper "<(sysroot)" "<(target_arch)"',
       },
@@ skipping 73 matching lines @@
               '<!@(<(pkg-config) --libs-only-L --libs-only-other gtk+-unix-print-2.0)',
             ],
             'libraries': [
               '<!@(<(pkg-config) --libs-only-l gtk+-unix-print-2.0)',
             ],
           },
         }],
       ],
     },
     {
+      'target_name': 'frame',
+      'type': 'none',
+      'conditions': [
+        ['_toolset=="target"', {
+          'direct_dependent_settings': {
+            'cflags': [
+              '<!@(<(pkg-config) --cflags utouch-frame)',
+            ],
+          },
+          'link_settings': {
+            'ldflags': [
+              '<!@(<(pkg-config) --libs-only-L --libs-only-other utouch-frame)',
+            ],
+            'libraries': [
+              '<!@(<(pkg-config) --libs-only-l utouch-frame)',
+            ],
+          },
+        }],
+      ],
+    },
+    {
+      'target_name': 'grail',
+      'type': 'none',
+      'conditions': [
+        ['_toolset=="target"', {
+          'direct_dependent_settings': {
+            'cflags': [
+              '<!@(<(pkg-config) --cflags utouch-grail)',
+            ],
+          },
+          'link_settings': {
+            'ldflags': [
+              '<!@(<(pkg-config) --libs-only-L --libs-only-other utouch-grail)',
+            ],
+            'libraries': [
+              '<!@(<(pkg-config) --libs-only-l utouch-grail)',
+            ],
+          },
+        }],
+      ],
+    },
+    {
       'target_name': 'ssl',
       'type': 'none',
       'conditions': [
         ['_toolset=="target"', {
           'conditions': [
             ['use_openssl==1', {
               'dependencies': [
                 '../../third_party/openssl/openssl.gyp:openssl',
               ],
             }],
@@ skipping 538 matching lines @@
             ],
             'libraries': [
               '<!@(<(pkg-config) --libs-only-l libudev)',
             ],
           },
         }],
       ],
     },
   ],
 }