Reland r242290, r241609, r242134.

chrome/browser/ui/webui/signin/inline_login_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/inline_login_handler.h"
+
+#include "base/bind.h"
+#include "base/values.h"
+#include "chrome/browser/browser_process.h"
+#include "content/public/browser/web_ui.h"
+#include "google_apis/gaia/gaia_urls.h"
+
+InlineLoginHandler::InlineLoginHandler() {}
+
+InlineLoginHandler::~InlineLoginHandler() {}
+
+void InlineLoginHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback("initialize",
+      base::Bind(&InlineLoginHandler::HandleInitializeMessage,
+                  base::Unretained(this)));
+  web_ui()->RegisterMessageCallback("completeLogin",
+      base::Bind(&InlineLoginHandler::HandleCompleteLoginMessage,
+                  base::Unretained(this)));
+}
+
+void InlineLoginHandler::HandleInitializeMessage(const base::ListValue* args) {
+  base::DictionaryValue params;
+
+  const std::string& app_locale = g_browser_process->GetApplicationLocale();
+  params.SetString("hl", app_locale);
+  GaiaUrls* gaiaUrls = GaiaUrls::GetInstance();
+  params.SetString("gaiaUrl", gaiaUrls->gaia_url().spec());
+  params.SetInteger("authMode", kDefaultAuthMode);
+
+  SetExtraInitParams(params);
+
+  web_ui()->CallJavascriptFunction("inline.login.loadAuthExtension", params);
+}
+
+void InlineLoginHandler::HandleCompleteLoginMessage(
+    const base::ListValue* args) {
+  CompleteLogin(args);
+}