aura: Update how the tooltip manager works.

views/widget/native_widget_aura.cc

Index: views/widget/native_widget_aura.cc
diff --git a/views/widget/native_widget_aura.cc b/views/widget/native_widget_aura.cc
index 6b100b115ac56e21fd22e6b9ce8efc1dd489216b..a9c88e7adb53c7a9ed4b46ac55e922f7adda0ab3 100644
--- a/views/widget/native_widget_aura.cc
+++ b/views/widget/native_widget_aura.cc
@@ -502,9 +502,13 @@ bool NativeWidgetAura::OnMouseEvent(aura::MouseEvent* event) {
   DCHECK(window_->IsVisible());
   if (event->type() == ui::ET_MOUSEWHEEL) {
     MouseWheelEvent wheel_event(event);
+    if (tooltip_manager_.get())
+      tooltip_manager_->UpdateForMouseEvent(wheel_event);
     return delegate_->OnMouseEvent(wheel_event);
   }
   MouseEvent mouse_event(event);
+  if (tooltip_manager_.get())
+    tooltip_manager_->UpdateForMouseEvent(mouse_event);
   return delegate_->OnMouseEvent(mouse_event);
 }