[Mac] Hide the page info when navigating

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

Index: chrome/browser/ui/cocoa/page_info/page_info_bubble_controller.h
diff --git a/chrome/browser/ui/cocoa/page_info/page_info_bubble_controller.h b/chrome/browser/ui/cocoa/page_info/page_info_bubble_controller.h
index 5e7d885d0a32e77db768cb5bdc9533e196b4f0ea..760dc9fa20ecaa1dbd4b8d7f9e118aca886d43fc 100644
--- a/chrome/browser/ui/cocoa/page_info/page_info_bubble_controller.h
+++ b/chrome/browser/ui/cocoa/page_info/page_info_bubble_controller.h
@@ -153,6 +153,11 @@ class PageInfoUIBridge : public content::WebContentsObserver,
                          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_;