Reland r242290, r241609, r242134.

chrome/browser/ui/webui/signin/inline_login_ui.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_ui.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/url_constants.h"
+#include "content/public/browser/web_ui.h"
+#include "content/public/browser/web_ui_data_source.h"
+#include "grit/browser_resources.h"
+
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/ui/webui/chromeos/login/inline_login_handler_chromeos.h"
+#else
+#include "chrome/browser/extensions/tab_helper.h"
+#include "chrome/browser/ui/webui/signin/inline_login_handler_impl.h"
+#endif
+
+namespace {
+
+content::WebUIDataSource* CreateWebUIDataSource() {
+  content::WebUIDataSource* source =
+        content::WebUIDataSource::Create(chrome::kChromeUIChromeSigninHost);
+  source->SetUseJsonJSFormatV2();
+  source->SetJsonPath("strings.js");
+
+  source->SetDefaultResource(IDR_INLINE_LOGIN_HTML);
+  source->AddResourcePath("inline_login.css", IDR_INLINE_LOGIN_CSS);
+  source->AddResourcePath("inline_login.js", IDR_INLINE_LOGIN_JS);
+  return source;
+};
+
+} // empty namespace
+
+InlineLoginUI::InlineLoginUI(content::WebUI* web_ui)
+    : WebDialogUI(web_ui),
+      auth_extension_(Profile::FromWebUI(web_ui)) {
+  Profile* profile = Profile::FromWebUI(web_ui);
+  content::WebUIDataSource::Add(profile, CreateWebUIDataSource());
+
+#if defined(OS_CHROMEOS)
+  web_ui->AddMessageHandler(new chromeos::InlineLoginHandlerChromeOS());
+#else
+  web_ui->AddMessageHandler(new InlineLoginHandlerImpl());
+  // Required for intercepting extension function calls when the page is loaded
+  // in a bubble (not a full tab, thus tab helpers are not registered
+  // automatically).
+  extensions::TabHelper::CreateForWebContents(web_ui->GetWebContents());
+#endif
+}
+
+InlineLoginUI::~InlineLoginUI() {}