Add gesture target fuzzing to views

ui/views/widget/root_view.cc

Index: ui/views/widget/root_view.cc
diff --git a/ui/views/widget/root_view.cc b/ui/views/widget/root_view.cc
index 2e799a8f2324b16b68e29a426cbc8beb5646d2c9..ac6c38c77a1ae6c7d911bf23cd7d0ceb4c75d16d 100644
--- a/ui/views/widget/root_view.cc
+++ b/ui/views/widget/root_view.cc
@@ -496,10 +496,16 @@ ui::GestureStatus RootView::OnGestureEvent(const GestureEvent& event) {
     return ui::GESTURE_STATUS_UNKNOWN;
   }
 
+  gfx::Rect touch_rect(event.details().bounding_box());
+  gfx::Point touch_rect_location(touch_rect.x(), touch_rect.y());
+  ConvertPointToScreen(this, &touch_rect_location);
+  touch_rect.set_origin(touch_rect_location);
+  View *v = GetEventHandlerForRect(touch_rect);
+
   // Walk up the tree until we find a view that wants the gesture event.
-  for (gesture_handler_ = GetEventHandlerForPoint(e.location());
-      gesture_handler_ && (gesture_handler_ != this);
-      gesture_handler_ = gesture_handler_->parent()) {
+  for (gesture_handler_ = v ? v : GetEventHandlerForPoint(e.location());
+       gesture_handler_ && (gesture_handler_ != this);
+       gesture_handler_ = gesture_handler_->parent()) {
     if (!gesture_handler_->enabled()) {
       // Disabled views eat events but are treated as not handled.
       return ui::GESTURE_STATUS_UNKNOWN;