mash: Fix mash app shelf items; encapsulate ash property setup.

ui/views/examples/examples_window.cc

Index: ui/views/examples/examples_window.cc
diff --git a/ui/views/examples/examples_window.cc b/ui/views/examples/examples_window.cc
index 5f869477c3e8beb5deaa04c7136ae4e6e62325ac..356a5315cd72da897e0fa4471b13fd514b391fb8 100644
--- a/ui/views/examples/examples_window.cc
+++ b/ui/views/examples/examples_window.cc
@@ -219,9 +219,9 @@ class ExamplesWindowContents : public WidgetDelegateView,
 // static
 ExamplesWindowContents* ExamplesWindowContents::instance_ = NULL;
 
-void ShowExamplesWindow(Operation operation,
-                        gfx::NativeWindow window_context,
-                        ExampleVector extra_examples) {
+Widget* ShowExamplesWindow(Operation operation,
+                           gfx::NativeWindow window_context,
+                           ExampleVector extra_examples) {
   if (ExamplesWindowContents::instance()) {
     ExamplesWindowContents::instance()->GetWidget()->Activate();
   } else {
@@ -234,6 +234,7 @@ void ShowExamplesWindow(Operation operation,
     widget->Init(params);
     widget->Show();
   }
+  return ExamplesWindowContents::instance()->GetWidget();
 }
 
 void LogStatus(const std::string& string) {