exo: Confine windows to primary display

components/exo/shell_surface.cc

Index: components/exo/shell_surface.cc
diff --git a/components/exo/shell_surface.cc b/components/exo/shell_surface.cc
index ffa7d00d1871efd3253c2ce536d3e88c61f3c816..7e4e3ae753e3abb4e38843c1d83ac422a090092e 100644
--- a/components/exo/shell_surface.cc
+++ b/components/exo/shell_surface.cc
@@ -1528,7 +1528,9 @@ void ShellSurface::UpdateWidgetBounds() {
   const gfx::Rect widget_bounds = widget_->GetWindowBoundsInScreen();
   if (widget_bounds != new_widget_bounds) {
     if (bounds_mode_ != BoundsMode::CLIENT || !resizer_) {
-      widget_->SetBounds(new_widget_bounds);
+      // TODO(domlaskowski): Use screen coordinates once multi-display support
+      // lands in ARC. See crbug.com/718627.
+      widget_->GetNativeWindow()->SetBounds(new_widget_bounds);
       UpdateSurfaceBounds();
     } else {
       // TODO(domlaskowski): Synchronize window state transitions with the