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

ui/aura/root_window_host_linux.cc

Index: ui/aura/root_window_host_linux.cc
===================================================================
--- ui/aura/root_window_host_linux.cc	(revision 126124)
+++ ui/aura/root_window_host_linux.cc	(working copy)
@@ -388,6 +388,11 @@
       if (!factory->ShouldProcessXI2Event(xev))
         break;
 
+      // Update utouch frame state
+#if defined(USE_UTOUCH)
+      ui::TouchFactory::GetInstance()->ProcessXI2Event(xev);
+#endif  // USE_UTOUCH
+
       ui::EventType type = ui::EventTypeFromNative(xev);
       // If this is a motion event we want to coalesce all pending motion
       // events that are at the top of the queue.
@@ -620,6 +625,10 @@
   XSendEvent(xdisplay_, xwindow_, False, 0, &xevent);
 }
 
+aura::NativeHandle RootWindowHostLinux::GetNativeWindow() const {
+  return xwindow_;
+}
+
 bool RootWindowHostLinux::IsWindowManagerPresent() {
   // Per ICCCM 2.8, "Manager Selections", window managers should take ownership
   // of WM_Sn selections (where n is a screen number).