Set the window frames to be non transparent while the user is cycling through workspaces

ash/wm/window_properties.cc

Index: ash/wm/window_properties.cc
diff --git a/ash/wm/window_properties.cc b/ash/wm/window_properties.cc
index 493cea7e5b5eff6aeaac0c4a1034fed794a06c2e..48fc7f7b1c82ee6822a581bdd7657dd89c0c890f 100644
--- a/ash/wm/window_properties.cc
+++ b/ash/wm/window_properties.cc
@@ -20,6 +20,7 @@ namespace internal {
 DEFINE_OWNED_WINDOW_PROPERTY_KEY(ash::internal::AlwaysOnTopController,
                                  kAlwaysOnTopControllerKey,
                                  NULL);
+DEFINE_WINDOW_PROPERTY_KEY(bool, kCyclingThroughWorkspacesKey, false);
 DEFINE_WINDOW_PROPERTY_KEY(bool, kIgnoreSoloWindowFramePainterPolicy, false);
 DEFINE_WINDOW_PROPERTY_KEY(bool, kIgnoredByShelfKey, false);
 DEFINE_WINDOW_PROPERTY_KEY(bool, kImmersiveModeKey, false);