Getting RenderWidgetHostViewWin ready for a GestureRecognizer.

ui/views/events/event.h

Index: ui/views/events/event.h
diff --git a/ui/views/events/event.h b/ui/views/events/event.h
index 7574771071cc6ca148eea72e68dd2779aeb61922..3c7396b41c4f2d9a97765d334a5c739ca98305af 100644
--- a/ui/views/events/event.h
+++ b/ui/views/events/event.h
@@ -415,6 +415,15 @@ class VIEWS_EXPORT ScrollEvent : public MouseEvent {
 class VIEWS_EXPORT GestureEvent : public LocatedEvent,
                                   public ui::GestureEvent {
  public:
+  GestureEvent(ui::EventType type,
+               int x,
+               int y,
+               int flags,
+               base::Time time_stamp,
+               float delta_x,
+               float delta_y,
+               unsigned int touch_ids_bitfield);
+
   explicit GestureEvent(const NativeEvent& native_event);
 
   // Create a new GestureEvent which is identical to the provided model.
@@ -441,6 +450,12 @@ class VIEWS_EXPORT GestureEvent : public LocatedEvent,
   float delta_x_;
   float delta_y_;
 
+  // The set of indices of ones in the binary representation of
+  // touch_ids_bitfield_ is the set of touch_ids associate with this gesture.

[sky, 2012/05/03 22:39:19]

Place |s variable names in comments, eg |touch_ids_bitfield_|.

+  // This value is stored as a bitfield because the number of touch ids varies,
+  // but we currently don't need more than 32 touches at a time.
+  const unsigned int touch_ids_bitfield_;
+
   DISALLOW_COPY_AND_ASSIGN(GestureEvent);
 };