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

ui/aura/aura.gyp

Index: ui/aura/aura.gyp
===================================================================
--- ui/aura/aura.gyp	(revision 126124)
+++ ui/aura/aura.gyp	(working copy)
@@ -14,6 +14,8 @@
         '../../base/base.gyp:base',
         '../../base/base.gyp:base_i18n',
         '../../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
+	'../../build/linux/system.gyp:frame',
+	'../../build/linux/system.gyp:grail',
         '../../skia/skia.gyp:skia',
         '../gfx/compositor/compositor.gyp:compositor',
         '../ui.gyp:gfx_resources',
@@ -63,14 +65,16 @@
         'gestures/gesture_configuration.cc',
         'gestures/gesture_configuration.h',
         'gestures/gesture_recognizer.h',
-        'gestures/gesture_recognizer_aura.cc',
+	'gestures/gesture_point.cc',	

[rjkroege, 2012/04/02 17:05:15]

preserve the alphabetic order?

+	'gestures/gesture_point.h',	
+	'gestures/gesture_recognizer_aura.cc',
         'gestures/gesture_recognizer_aura.h',
-        'gestures/gesture_point.cc',
-        'gestures/gesture_point.h',
-        'gestures/velocity_calculator.cc',
-        'gestures/velocity_calculator.h',
-        'gestures/gesture_sequence.cc',
-        'gestures/gesture_sequence.h',
+        'gestures/gesture_recognizer_grail.cc',
+        'gestures/gesture_recognizer_grail.h',
+ 	'gestures/gesture_sequence.cc',	
+ 	'gestures/gesture_sequence.h',
+	'gestures/velocity_calculator.cc',	
+ 	'gestures/velocity_calculator.h',	
         'layout_manager.cc',
         'layout_manager.h',
         'root_window_host.h',
@@ -100,6 +104,30 @@
             ['exclude', 'client/dispatcher_client.h'],
           ],
         }],
+	['use_utouch==1', {
+	  'sources!': [
+	     'gestures/gesture_point.cc',	
+	     'gestures/gesture_point.h',	
+	     'gestures/gesture_recognizer_aura.cc',
+             'gestures/gesture_recognizer_aura.h',
+ 	     'gestures/gesture_sequence.cc',	
+ 	     'gestures/gesture_sequence.h',
+	     'gestures/velocity_calculator.cc',	
+ 	     'gestures/velocity_calculator.h',
+	  ],
+	  'defines': [
+	    'USE_UTOUCH',
+	  ],
+	  'dependencies': [
+            '../../build/linux/system.gyp:frame',
+	    '../../build/linux/system.gyp:grail',	
+          ],
+	}, { #use_utouch!=1

[rjkroege, 2012/04/02 17:05:15]

shouldn't you be excluding the frame / grail dependency here?

+	  'sources!': [
+	     'gestures/gesture_recognizer_grail.cc',
+             'gestures/gesture_recognizer_grail.h',
+	  ],
+	}],
       ],
     },
     {