Mac: Fix window raising for multiple desktops

apps/app_shim/extension_app_shim_handler_mac.cc

Index: apps/app_shim/extension_app_shim_handler_mac.cc
diff --git a/apps/app_shim/extension_app_shim_handler_mac.cc b/apps/app_shim/extension_app_shim_handler_mac.cc
index a45eccb775e605498d04f5c921e3a71cf4da1b64..7e26027572aaf750acc46bc8e73b3a63defe52f0 100644
--- a/apps/app_shim/extension_app_shim_handler_mac.cc
+++ b/apps/app_shim/extension_app_shim_handler_mac.cc
@@ -297,7 +297,11 @@ void ExtensionAppShimHandler::OnShimFocus(Host* host,
     native_windows.insert((*it)->GetNativeWindow());
   }
   if (!native_windows.empty()) {
-    ui::FocusWindowSet(native_windows);
+    // Allow workspace switching. For the browser process, we can
+    // reasonably rely on OS X to switch spaces for us and honor
+    // relevant user settings. But shims don't have windows, so we
+    // have to do it ourselves.
+    ui::FocusWindowSet(native_windows, true);
     return;
   }