[Mac] Hide the page info when navigating

chrome/browser/ui/cocoa/page_info/page_info_bubble_controller.h

 // Copyright 2014 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_COCOA_PAGE_INFO_PAGE_INFO_BUBBLE_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_PAGE_INFO_PAGE_INFO_BUBBLE_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include <memory>
@@ skipping 135 matching lines @@
 
   // WebContentsObserver implementation.
   void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
 
   // PageInfoUI implementations.
   void SetCookieInfo(const CookieInfoList& cookie_info_list) override;
   void SetPermissionInfo(const PermissionInfoList& permission_info_list,
                          ChosenObjectInfoList chosen_object_info_list) override;
   void SetIdentityInfo(const IdentityInfo& identity_info) override;
 
+ protected:
+  // WebContentsObserver implementation.
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
+
  private:
   // The WebContents the bubble UI is attached to.
   content::WebContents* web_contents_;
 
   // The Cocoa controller for the bubble UI.
   PageInfoBubbleController* bubble_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(PageInfoUIBridge);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_PAGE_INFO_PAGE_INFO_BUBBLE_CONTROLLER_H_