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..1d882d1212a3234bd38732c6927af509c30b625a 100644
--- a/chrome/browser/ui/webui/signin/signin_error_handler.h
+++ b/chrome/browser/ui/webui/signin/signin_error_handler.h
@@ -19,7 +19,7 @@ class ListValue;
 
 class SigninErrorHandler : public content::WebUIMessageHandler {
  public:
-  SigninErrorHandler() {}
+  static SigninErrorHandler* Create(bool is_system_profile);

[pastarmovj, 2016/09/21 08:44:10]

I think a comment why you need this factory function is going to be useful here.

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

Done.

   ~SigninErrorHandler() override {}
 
   // content::WebUIMessageHandler:
@@ -33,6 +33,7 @@ class SigninErrorHandler : public content::WebUIMessageHandler {
   }
 
  protected:
+  SigninErrorHandler() {}

[pastarmovj, 2016/09/21 08:44:10]

nit: new line after the constructor.

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

Done.

   // Handles "switch" message from the page. No arguments.
   // This message is sent when the user switches to the existing profile of the
   // same username used for signin.
@@ -53,7 +54,7 @@ class SigninErrorHandler : public content::WebUIMessageHandler {
   // a single integer value for the height the native view should resize to.
   virtual void HandleInitializedWithSize(const base::ListValue* args);
 
-  void CloseDialog();
+  virtual void CloseDialog();
 
  private:
   const ProfileAttributesEntry* duplicate_profile_entry_ = nullptr;
@@ -61,4 +62,15 @@ class SigninErrorHandler : public content::WebUIMessageHandler {
   DISALLOW_COPY_AND_ASSIGN(SigninErrorHandler);
 };
 
+class SigninErrorWithoutBrowserHandler : public SigninErrorHandler {

[pastarmovj, 2016/09/21 08:44:10]

Comment this class please.

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

Done.

+ public:
+  SigninErrorWithoutBrowserHandler();
+
+ protected:
+  void CloseDialog() override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SigninErrorWithoutBrowserHandler);
+};
+
 #endif  // CHROME_BROWSER_UI_WEBUI_SIGNIN_SIGNIN_ERROR_HANDLER_H_