Take overscan into account when handling passive grab

BUG=None

Review URL: https://codereview.chromium.org/270803002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@269514 0039d316-1c4b-4281-b951-d872f2087c98

ash/host/ash_window_tree_host_x11.cc

@@ -340,7 +340,7 @@ void AshWindowTreeHostX11::TranslateAndDispatchLocatedEvent(
       aura::client::ScreenPositionClient* screen_position_client =
           aura::client::GetScreenPositionClient(root_window);
       gfx::Rect local(bounds().size());
-
+      local.Inset(transformer_helper_.GetHostInsets());
       if (screen_position_client && !local.Contains(event->location())) {
         gfx::Point location(event->location());
         // In order to get the correct point in screen coordinates