touch ui: Do not hide text selection handles when screen is rotated.

ui/views/touchui/touch_selection_controller_impl.cc

Index: ui/views/touchui/touch_selection_controller_impl.cc
diff --git a/ui/views/touchui/touch_selection_controller_impl.cc b/ui/views/touchui/touch_selection_controller_impl.cc
index 059709030799446c35d54c78b73330da7e71bab3..a348d0c20536f21e85f0e0166c99f316cb821614 100644
--- a/ui/views/touchui/touch_selection_controller_impl.cc
+++ b/ui/views/touchui/touch_selection_controller_impl.cc
@@ -643,12 +643,6 @@ void TouchSelectionControllerImpl::RunContextMenu() {
   client_view_->OpenContextMenu(anchor);
 }
 
-void TouchSelectionControllerImpl::OnAncestorWindowTransformed(
-    aura::Window* window,
-    aura::Window* ancestor) {
-  client_view_->DestroyTouchSelection();
-}
-

[sammiequon, 2017/06/06 19:01:27]

Would removing this have other undesired effects?

[mohsen, 2017/06/07 18:20:38]

This was added for Project Athena where we had textfields that could move around
(crbug/407659). That project was cancelled and I'm not aware of any existing
code that applies such transforms on a focused textfield.

[sammiequon, 2017/06/07 18:53:49]

Acknowledged. Do you think we should revert
https://codereview.chromium.org/558203002 as well, since this is the only
instance of OnAncestorWindowTransformed?

 void TouchSelectionControllerImpl::OnWidgetClosing(Widget* widget) {
   DCHECK_EQ(client_widget_, widget);
   client_widget_->RemoveObserver(this);