Implement online reauth UI for Locked Profiles on Mac

chrome/browser/profiles/profile_window.h

Index: chrome/browser/profiles/profile_window.h
diff --git a/chrome/browser/profiles/profile_window.h b/chrome/browser/profiles/profile_window.h
index 783dc7bc4b23d5da8c61af318bc7fbd47cd44a59..1344e967bcab43061c5faafb8c9ff91f142f8917 100644
--- a/chrome/browser/profiles/profile_window.h
+++ b/chrome/browser/profiles/profile_window.h
@@ -42,6 +42,27 @@ extern const char kUserManagerSelectProfileChromeSettings[];
 extern const char kUserManagerSelectProfileChromeMemory[];
 extern const char kUserManagerSelectProfileAppLauncher[];
 
+// This class observes the WebUI used in the UserManager to perform online
+// reauthentication of locked profiles. Its concretely implemented in
+// UserManagerMac and UserManagerView to specialize the closing of the UI's
+// dialog widget.
+class ReauthDialogObserver : public content::WebContentsObserver {
+ public:
+  ReauthDialogObserver(content::WebContents* web_contents,
+                       const std::string& email_address);
+  ~ReauthDialogObserver() override {}
+
+ private:
+  // content::WebContentsObserver:
+  void DidStopLoading() override;
+
+  virtual void CloseReauthDialog() = 0;
+
+  const std::string email_address_;
+
+  DISALLOW_COPY_AND_ASSIGN(ReauthDialogObserver);
+};
+
 // Returns the path of the profile connected to the given email.  If no profile
 // is found an empty file path is returned.
 base::FilePath GetPathOfProfileWithEmail(ProfileManager* profile_manager,