[Easy signin] Wire up userClick auth attempt to easy unlock app and back

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

 // Copyright 2013 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/user_manager_screen_handler.h"
 
 #include "base/bind.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/value_conversions.h"
@@ skipping 274 matching lines @@
   ProfileInfoCache& info_cache =
       g_browser_process->profile_manager()->GetProfileInfoCache();
   const size_t profile_index = GetIndexOfProfileWithEmailAndName(
       info_cache, base::UTF8ToUTF16(user_email), base::string16());
   DCHECK_LT(profile_index, info_cache.GetNumberOfProfiles());
 
   authenticating_profile_index_ = profile_index;
   ReportAuthenticationResult(true, ProfileMetrics::AUTH_LOCAL);
 }
 
+void UserManagerScreenHandler::AttemptEasySignin(
+    const std::string& user_email,
+    const std::string& secret,
+    const std::string& key_label) {
+  NOTREACHED();
+}
+
 void UserManagerScreenHandler::HandleInitialize(const base::ListValue* args) {
   SendUserList();
   web_ui()->CallJavascriptFunction("cr.ui.Oobe.showUserManagerScreen",
       base::FundamentalValue(IsGuestModeEnabled()),
       base::FundamentalValue(IsAddPersonEnabled()));
   desktop_type_ = chrome::GetHostDesktopTypeForNativeView(
       web_ui()->GetWebContents()->GetNativeView());
 
   ScreenlockBridge::Get()->SetLockHandler(this);
 }
@@ skipping 387 matching lines @@
         "cr.ui.Oobe.showSignInError",
         base::FundamentalValue(0),
         base::StringValue(l10n_util::GetStringUTF8(
             auth == ProfileMetrics::AUTH_FAILED_OFFLINE ?
                 IDS_LOGIN_ERROR_AUTHENTICATING_OFFLINE :
                 IDS_LOGIN_ERROR_AUTHENTICATING)),
         base::StringValue(""),
         base::FundamentalValue(0));
   }
 }