MacViews: Remove constrained window dependencies for certificate viewer.

chrome/browser/ui/views/native_web_contents_modal_dialog_manager_views.h

Index: chrome/browser/ui/views/native_web_contents_modal_dialog_manager_views.h
diff --git a/chrome/browser/ui/views/native_web_contents_modal_dialog_manager_views.h b/chrome/browser/ui/views/native_web_contents_modal_dialog_manager_views.h
index 21b2b9b3bf31f661d43accca3ac819642146bcde..566b56c19adc59b344c9148a5ba64801dabc6716 100644
--- a/chrome/browser/ui/views/native_web_contents_modal_dialog_manager_views.h
+++ b/chrome/browser/ui/views/native_web_contents_modal_dialog_manager_views.h
@@ -59,8 +59,20 @@ class NativeWebContentsModalDialogManagerViews
   void HostChanged(web_modal::WebContentsModalDialogHost* new_host) override;
   gfx::NativeWindow dialog() override;
 
- private:
+ protected:
+  web_modal::SingleWebContentsDialogManagerDelegate* native_delegate() {
+    return native_delegate_;
+  }
+
+  // By default just calls widget->Show() or Hide(), but allows a derived class
+  // to override in order to hide an alternate way (e.g. if the default hide
+  // would tear down attached dialogs too early).
+  virtual void ShowWidget(views::Widget* widget);
+  virtual void HideWidget(views::Widget* widget);
+
   static views::Widget* GetWidget(gfx::NativeWindow dialog);
+
+ private:
   void WidgetClosing(views::Widget* widget);
 
   web_modal::SingleWebContentsDialogManagerDelegate* native_delegate_;