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

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/signin/signin_error_handler.h"
 
 #include "base/bind.h"
 #include "chrome/browser/profiles/profile_attributes_entry.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profile_window.h"
 #include "chrome/browser/signin/signin_ui_util.h"
 #include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/user_manager.h"
 #include "chrome/browser/ui/webui/signin/signin_utils.h"
 #include "content/public/browser/web_ui.h"
 #include "url/gurl.h"
 
+// static
+SigninErrorHandler* SigninErrorHandler::Create(bool is_system_profile) {
+  if (is_system_profile)
+    return new SigninErrorWithoutBrowserHandler();

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

I haven't looked at the calling site but it would be nice if we can wrap the
result in a unique_ptr.

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

The handler will be assigned to webui
https://cs.chromium.org/chromium/src/chrome/browser/ui/webui/signin/signin_er...

And eventually stored in a scopedvector
https://cs.chromium.org/chromium/src/content/browser/webui/web_ui_impl.h?cl=G...

+  else
+    return new SigninErrorHandler();
+}
+
 void SigninErrorHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback(
       "confirm",
       base::Bind(&SigninErrorHandler::HandleConfirm, base::Unretained(this)));
   web_ui()->RegisterMessageCallback(
       "switchToExistingProfile",
       base::Bind(&SigninErrorHandler::HandleSwitchToExistingProfile,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback(
       "learnMore",
@@ skipping 40 matching lines @@
   // platforms and if there's a way to start unfocused while avoiding this
   // workaround.
   web_ui()->CallJavascriptFunctionUnsafe("signin.error.clearFocus");
 }
 
 void SigninErrorHandler::CloseDialog() {
   Browser* browser = signin::GetDesktopBrowser(web_ui());
   DCHECK(browser);
   browser->CloseModalSigninWindow();
 }
+
+SigninErrorWithoutBrowserHandler::SigninErrorWithoutBrowserHandler()
+    : SigninErrorHandler() {}
+
+void SigninErrorWithoutBrowserHandler::CloseDialog() {
+  UserManager::HideReauthDialog();
+}