Display local signin error without browser and record the path of selected profile in user manager.

chrome/browser/ui/views/profiles/user_manager_view.h

Index: chrome/browser/ui/views/profiles/user_manager_view.h
diff --git a/chrome/browser/ui/views/profiles/user_manager_view.h b/chrome/browser/ui/views/profiles/user_manager_view.h
index 8de45f806d8665055199dc5dc3866e9cf6aeb670..8c46341806c347f3c74aa69fcfa9781a2b515415 100644
--- a/chrome/browser/ui/views/profiles/user_manager_view.h
+++ b/chrome/browser/ui/views/profiles/user_manager_view.h
@@ -31,6 +31,9 @@ class ReauthDelegate : public views::DialogDelegateView,
   // UserManager::BaseReauthDialogDelegate:
   void CloseReauthDialog() override;
 
+  // Display the local error message inside login window.
+  void DisplayErrorMessage();
+
  private:
   ReauthDelegate();
 
@@ -50,7 +53,7 @@ class ReauthDelegate : public views::DialogDelegateView,
   int GetDialogButtons() const override;
   views::View* GetInitiallyFocusedView() override;
 
-  UserManagerView* parent_; // Not owned.
+  UserManagerView* parent_;  // Not owned.
   views::WebView* web_view_;
   const std::string email_address_;
 
@@ -97,6 +100,12 @@ class UserManagerView : public views::DialogDelegateView {
   // Hides the reauth dialog if it is showing.
   void HideReauthDialog();
 
+  // Display local sign in error message withou browser.

[sky, 2016/09/20 23:30:19]

without.
What do you mean by local?

[zmin, 2016/09/21 00:09:35]

Local means the error not from Gaia(i..e password error, account doesn't exist)
but from Chrome(i.e. email has been used by another profile, email doesn't match
the policy rule)

[zmin, 2016/09/21 16:40:04]

Remove "local" as it may cause confusion

+  void DisplayErrorMessage();
+
+  void SetSigninProfilePath(const base::FilePath profile_path);

[sky, 2016/09/20 23:30:19]

const &

[zmin, 2016/09/21 16:40:04]

Done.

+  base::FilePath GetSigninProfilePath();
+
  private:
   friend class ReauthDelegate;
   friend std::default_delete<UserManagerView>;
@@ -129,6 +138,8 @@ class UserManagerView : public views::DialogDelegateView {
   std::unique_ptr<ScopedKeepAlive> keep_alive_;
   base::Time user_manager_started_showing_;
 
+  base::FilePath signin_profile_path_;
+
   DISALLOW_COPY_AND_ASSIGN(UserManagerView);
 };