Refactor ViewsDelegate singleton

ui/views/controls/webview/webview_interactive_uitest.cc

Index: ui/views/controls/webview/webview_interactive_uitest.cc
diff --git a/ui/views/controls/webview/webview_interactive_uitest.cc b/ui/views/controls/webview/webview_interactive_uitest.cc
index d8598184e176d356a2fdc8551b6af5b57eb19fba..3d0e4d73ed98486262ab404424fed42358888fbd 100644
--- a/ui/views/controls/webview/webview_interactive_uitest.cc
+++ b/ui/views/controls/webview/webview_interactive_uitest.cc
@@ -43,8 +43,7 @@ class WebViewInteractiveUiTest : public views::test::WidgetTest {
 
   void SetUp() override {
     gfx::GLSurface::InitializeOneOffForTests();
-    // The ViewsDelegate is deleted when the ViewsTestBase class is torn down.
-    WidgetTest::set_views_delegate(new WebViewTestViewsDelegate);
+    set_views_delegate(make_scoped_ptr(new WebViewTestViewsDelegate));
     WidgetTest::SetUp();
   }