Move touch CTM from X into Chrome

ui/events/x/events_x.cc

Index: ui/events/x/events_x.cc
diff --git a/ui/events/x/events_x.cc b/ui/events/x/events_x.cc
index 9fec9df2bf9bcf18d5f9947a3d96e0c4229a8662..1ab01710573a881e01fd80015f843f12a3a4fcc5 100644
--- a/ui/events/x/events_x.cc
+++ b/ui/events/x/events_x.cc
@@ -434,8 +434,24 @@ gfx::Point EventLocationFromNative(const base::NativeEvent& native_event) {
     case GenericEvent: {
       XIDeviceEvent* xievent =
           static_cast<XIDeviceEvent*>(native_event->xcookie.data);
-      return gfx::Point(static_cast<int>(xievent->event_x),
-                        static_cast<int>(xievent->event_y));
+      float x = xievent->event_x;
+      float y = xievent->event_y;
+#if defined(OS_CHROMEOS)
+      ui::EventType type = ui::EventTypeFromNative(native_event);
+      switch (type) {

[sadrul, 2014/03/15 19:32:51]

Let's do this for xievent->evtype == XI_Touch* events only.

[Yufeng Shen (Slow to review), 2014/04/29 20:34:18]

Done.

+        case ui::ET_TOUCH_MOVED:
+        case ui::ET_TOUCH_PRESSED:
+        case ui::ET_TOUCH_CANCELLED:
+        case ui::ET_TOUCH_RELEASED: {
+          ui::DeviceDataManager::GetInstance()->ApplyTouchCTM(
+              xievent->deviceid, &x, &y);
+          break;
+        }
+        default:
+          break;
+      }
+#endif  // defined(OS_CHROMEOS)
+      return gfx::Point(static_cast<int>(x), static_cast<int>(y));
     }
   }
   return gfx::Point();