Make the cursor have separate mode for disabled mouse events and invisible.

ash/magnifier/magnification_controller.cc

Index: ash/magnifier/magnification_controller.cc
diff --git a/ash/magnifier/magnification_controller.cc b/ash/magnifier/magnification_controller.cc
index b7fd98dbfc204ae1449435060f9e47661f256da9..9ee22dea54b56886793922917f338970f85f659e 100644
--- a/ash/magnifier/magnification_controller.cc
+++ b/ash/magnifier/magnification_controller.cc
@@ -343,7 +343,7 @@ void MagnificationControllerImpl::AfterAnimationMoveCursorTo(
     // animation.
     if (!cursor_client->IsCursorVisible())
       return;
-    cursor_client->ShowCursor(false);
+    cursor_client->DisableMouseEvents();
   }
   move_cursor_after_animation_ = true;
   position_after_animation_ = location;
@@ -393,7 +393,7 @@ void MagnificationControllerImpl::OnImplicitAnimationsCompleted() {
     aura::client::CursorClient* cursor_client =
         aura::client::GetCursorClient(root_window_);
     if (cursor_client)
-      cursor_client->ShowCursor(true);
+      cursor_client->EnableMouseEvents();
   }
 
   is_on_animation_ = false;