Require a default parent to use some Views implementations on Windows.

chrome/browser/ui/views/frame/browser_frame_win.cc

Index: chrome/browser/ui/views/frame/browser_frame_win.cc
diff --git a/chrome/browser/ui/views/frame/browser_frame_win.cc b/chrome/browser/ui/views/frame/browser_frame_win.cc
index 2b344c6663578753da3f94ceb3b0b85789e388f6..b641f359961d9fedeec8f6593973538ce9df50ab 100644
--- a/chrome/browser/ui/views/frame/browser_frame_win.cc
+++ b/chrome/browser/ui/views/frame/browser_frame_win.cc
@@ -17,6 +17,7 @@
 #include "ui/base/theme_provider.h"
 #include "ui/gfx/font.h"
 #include "views/screen.h"
+#include "views/views_delegate.h"
 #include "views/widget/native_widget_win.h"
 #include "views/widget/widget.h"
 #include "views/window/non_client_view.h"
@@ -217,7 +218,8 @@ const gfx::Font& BrowserFrame::GetTitleFont() {
 NativeBrowserFrame* NativeBrowserFrame::CreateNativeBrowserFrame(
     BrowserFrame* browser_frame,
     BrowserView* browser_view) {
-  if (views::Widget::IsPureViews())
+  if (views::Widget::IsPureViews() &&
+      views::ViewsDelegate::views_delegate->GetDefaultParentView())
     return new BrowserFrameViews(browser_frame, browser_view);
   return new BrowserFrameWin(browser_frame, browser_view);
 }