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

chrome/browser/ui/webui/signin/signin_error_handler.h

Index: chrome/browser/ui/webui/signin/signin_error_handler.h
diff --git a/chrome/browser/ui/webui/signin/signin_error_handler.h b/chrome/browser/ui/webui/signin/signin_error_handler.h
index 3de30be7ce9488441f4df941514f1385e73c186f..bdbe85660e7e985dc64214a90685a826a4030bdf 100644
--- a/chrome/browser/ui/webui/signin/signin_error_handler.h
+++ b/chrome/browser/ui/webui/signin/signin_error_handler.h
@@ -19,7 +19,8 @@ class ListValue;
 
 class SigninErrorHandler : public content::WebUIMessageHandler {
  public:
-  SigninErrorHandler() {}
+  explicit SigninErrorHandler(bool is_system_profile);
+
   ~SigninErrorHandler() override {}
 
   // content::WebUIMessageHandler:
@@ -58,6 +59,8 @@ class SigninErrorHandler : public content::WebUIMessageHandler {
  private:
   const ProfileAttributesEntry* duplicate_profile_entry_ = nullptr;
 
+  bool is_system_profile_;
+
   DISALLOW_COPY_AND_ASSIGN(SigninErrorHandler);
 };