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

ui/aura/event.cc

Index: ui/aura/event.cc
===================================================================
--- ui/aura/event.cc	(revision 126124)
+++ ui/aura/event.cc	(working copy)
@@ -378,9 +378,21 @@
                            base::Time time_stamp,
                            float delta_x,
                            float delta_y)
+    : LocatedEvent(type, gfx::Point(x, y), gfx::Point(x, y), flags) {
+  properties_.delta_x = delta_x;
+  properties_.delta_y = delta_y;
+  // XXX: Why is aura::Event::time_stamp_ a TimeDelta instead of a Time?
+  set_time_stamp(base::TimeDelta::FromSeconds(time_stamp.ToDoubleT()));
+}
+
+GestureEvent::GestureEvent(ui::EventType type,
+                           int x,
+                           int y,
+                           int flags,
+                           base::Time time_stamp,
+                           const GestureEvent::Properties& properties)
     : LocatedEvent(type, gfx::Point(x, y), gfx::Point(x, y), flags),
-      delta_x_(delta_x),
-      delta_y_(delta_y) {
+      properties_(properties) {
   // XXX: Why is aura::Event::time_stamp_ a TimeDelta instead of a Time?
   set_time_stamp(base::TimeDelta::FromSeconds(time_stamp.ToDoubleT()));
 }
@@ -389,8 +401,7 @@
                            Window* source,
                            Window* target)
     : LocatedEvent(model, source, target),
-      delta_x_(model.delta_x_),
-      delta_y_(model.delta_y_) {
+      properties_(model.properties_) {
 }
 
 }  // namespace aura