Make tooltips toplevel windows on Linux

ui/views/widget/desktop_aura/desktop_screen_position_client.cc

Index: ui/views/widget/desktop_aura/desktop_screen_position_client.cc
diff --git a/ui/views/widget/desktop_aura/desktop_screen_position_client.cc b/ui/views/widget/desktop_aura/desktop_screen_position_client.cc
index 1f455ecc74db5535b66f956ebed787d6480cc70f..2712ac87865a531e3e8a8966e915735ee472bf38 100644
--- a/ui/views/widget/desktop_aura/desktop_screen_position_client.cc
+++ b/ui/views/widget/desktop_aura/desktop_screen_position_client.cc
@@ -27,8 +27,7 @@ gfx::Point GetOrigin(const aura::Window* root_window) {
 // Returns true if bounds passed to window are treated as though they are in
 // screen coordinates.
 bool PositionWindowInScreenCoordinates(aura::Window* window) {
-  if (window->type() == ui::wm::WINDOW_TYPE_POPUP ||
-      window->type() == ui::wm::WINDOW_TYPE_TOOLTIP)
+  if (window->type() == ui::wm::WINDOW_TYPE_POPUP)
     return true;
 
   Widget* widget = Widget::GetWidgetForNativeView(window);