chromeos: makes mus send keyevents to display root when nothing has focus

services/ui/ws/cursor_unittest.cc

Index: services/ui/ws/cursor_unittest.cc
diff --git a/services/ui/ws/cursor_unittest.cc b/services/ui/ws/cursor_unittest.cc
index 1b75b86f70b83fb345822aa897f141bf854581b9..3b4d522b608a631e2b9b1750a4d1e7cdb49198af 100644
--- a/services/ui/ws/cursor_unittest.cc
+++ b/services/ui/ws/cursor_unittest.cc
@@ -63,7 +63,8 @@ class CursorTest : public testing::Test {
     DisplayManager* display_manager = window_server()->display_manager();
     //    ASSERT_EQ(1u, display_manager->displays().size());
     Display* display = *display_manager->displays().begin();
-    return display->GetWindowManagerDisplayRootForUser(kTestId1)->root();
+    return display->GetWindowManagerDisplayRootForUser(kTestId1)
+        ->GetClientVisibileRoot();
   }
 
   // Create a 30x30 window where the outer 10 pixels is non-client.