Fix the Web Bluetooth chooser when it is used on Chrome apps on non-Mac

chrome/browser/ui/views/chooser_content_view.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_CHOOSER_CONTENT_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_CHOOSER_CONTENT_VIEW_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 70 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(ChooserContentViewTest,
                            DiscoveringAndOneOptionAddedAndSelectedAndIdle);
   FRIEND_TEST_ALL_PREFIXES(ChooserContentViewTest, ClickRescanLink);
   FRIEND_TEST_ALL_PREFIXES(ChooserContentViewTest, ClickGetHelpLink);
 
   std::unique_ptr<ChooserController> chooser_controller_;
   views::TableView* table_view_ = nullptr;  // Weak.
   views::View* table_parent_ = nullptr;  // Weak.
   views::StyledLabel* turn_adapter_off_help_ = nullptr;  // Weak.
   views::Throbber* throbber_ = nullptr;  // Weak.
+  // |footnote_link_ptr_| will transfer its ownership of the pointer to its
+  // caller when CreateFootnoteView() is called.
+  std::unique_ptr<views::StyledLabel> footnote_link_ptr_;
+  // |footnote_link_| holds a weak pointer of |footnote_link_ptr_|.
   views::StyledLabel* footnote_link_ = nullptr;  // Weak.
   base::string16 help_text_;
   base::string16 help_and_scanning_text_;
   base::string16 help_and_re_scan_text_;
   gfx::Range help_text_range_;
   gfx::Range re_scan_text_range_;
 
   DISALLOW_COPY_AND_ASSIGN(ChooserContentView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_CHOOSER_CONTENT_VIEW_H_