Makes sure switching workspaces only animations windows that want to

ash/wm/workspace/workspace_manager.cc

Index: ash/wm/workspace/workspace_manager.cc
diff --git a/ash/wm/workspace/workspace_manager.cc b/ash/wm/workspace/workspace_manager.cc
index 098c4e91a52de89c20abc818d9360a171af33f14..b16a35f556e4efa2102a9c743cc18c43349ad90a 100644
--- a/ash/wm/workspace/workspace_manager.cc
+++ b/ash/wm/workspace/workspace_manager.cc
@@ -280,7 +280,8 @@ void WorkspaceManager::SetWindowLayerVisibility(
     bool value) {
   for (size_t i = 0; i < windows.size(); ++i) {
     ui::Layer* layer = windows[i]->layer();
-    if (layer) {
+    // Only show the layer for windows that want to be visible.
+    if (layer && (!value || windows[i]->TargetVisibility())) {
       windows[i]->SetProperty(aura::client::kAnimationsDisabledKey,
                               change_type == DONT_ANIMATE);
       bool update_layer = true;