PageInfo bubble: Use the non-client view's window title and close button.

chrome/browser/ui/views/website_settings/website_settings_popup_view.h

Index: chrome/browser/ui/views/website_settings/website_settings_popup_view.h
diff --git a/chrome/browser/ui/views/website_settings/website_settings_popup_view.h b/chrome/browser/ui/views/website_settings/website_settings_popup_view.h
index 7bd93798c3ba5fd396322e2cc7fc12c83eddcc8f..f632b3ec31f5574db4d897ee40ea5e92c10da4ab 100644
--- a/chrome/browser/ui/views/website_settings/website_settings_popup_view.h
+++ b/chrome/browser/ui/views/website_settings/website_settings_popup_view.h
@@ -107,8 +107,11 @@ class WebsiteSettingsPopupView : public content::WebContentsObserver,
       const WebsiteSettingsUI::ChosenObjectInfo& info) override;
 
   // views::BubbleDialogDelegateView implementation.
+  base::string16 GetWindowTitle() const override;
+  bool ShouldShowCloseButton() const override;
   void OnWidgetDestroying(views::Widget* widget) override;
   int GetDialogButtons() const override;
+  const gfx::FontList& GetTitleFontList() const override;
 
   // views::ButtonListener implementation.
   void ButtonPressed(views::Button* button, const ui::Event& event) override;
@@ -152,6 +155,9 @@ class WebsiteSettingsPopupView : public content::WebContentsObserver,
   // The header section (containing security-related information).
   PopupHeaderView* header_;
 
+  // The label that displays security summary for the current page.

[lgarron, 2016/12/14 23:46:23]

Nit: Remove "label" from comment. (e.g. "The security summary for the current
page.")

[tapted, 2017/01/04 00:36:49]

Done.

+  base::string16 summary_text_;
+
   // The separator between the header and the site settings view.
   views::Separator* separator_;