Add EDU login flow: Add browser proxy

Add browser proxy to call the EDU account login handler.

Bug: 1043108
Change-Id: Ia772b15b73568232ea13e714919adcbe6e98548b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2043470
Commit-Queue: Anastasiia Nikolaienko <anastasiian@chromium.org>
Reviewed-by: Kush Sinha <sinhak@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747244}

chrome/browser/browser_resources.grd

@@ -215,6 +215,8 @@
         <!-- Edu account login resources -->
         <include name="IDU_EDU_LOGIN_EDU_LOGIN_HTML" file="resources\chromeos\edu_login\edu_login.html" allowexternalscript="true" type="BINDATA" compress="gzip" />
         <include name="IDU_EDU_LOGIN_EDU_LOGIN_JS" file="${root_gen_dir}\chrome\browser\resources\chromeos\edu_login\app.js" use_base_dir="false" type="BINDATA" compress="gzip" />
+        <include name="IDR_EDU_LOGIN_EDU_LOGIN_UTIL_JS" file="resources\chromeos\edu_login\edu_login_util.js" type="BINDATA" compress="gzip" />
+        <include name="IDR_EDU_LOGIN_BROWSER_PROXY_JS" file="resources\chromeos\edu_login\browser_proxy.js" type="BINDATA" compress="gzip" />
         <include name="IDR_EDU_LOGIN_EDU_LOGIN_BUTTON_JS" file="${root_gen_dir}\chrome\browser\resources\chromeos\edu_login\edu_login_button.js" use_base_dir="false" type="BINDATA" compress="gzip" />
         <include name="IDR_EDU_LOGIN_EDU_LOGIN_TEMPLATE_JS" file="${root_gen_dir}\chrome\browser\resources\chromeos\edu_login\edu_login_template.js" use_base_dir="false" type="BINDATA" compress="gzip" />
         <include name="IDR_EDU_LOGIN_EDU_LOGIN_CSS_JS" file="${root_gen_dir}\chrome\browser\resources\chromeos\edu_login\edu_login_css.js" use_base_dir="false" type ="BINDATA" />

chrome/browser/resources/chromeos/edu_login/BUILD.gn

@@ -9,8 +9,10 @@ js_type_check("closure_compile") {
   is_polymer3 = true
   deps = [
     ":app",
+    ":browser_proxy",
     ":edu_login_button",
     ":edu_login_template",
+    ":edu_login_util",
   ]
 }
 
@@ -34,6 +36,17 @@ js_library("edu_login_template") {
   ]
 }
 
+js_library("browser_proxy") {
+  deps = [
+    ":edu_login_util",
+    "//ui/webui/resources/js:cr.m",
+  ]
+  externs_list = [ "$externs_path/chrome_send.js" ]
+}
+
+js_library("edu_login_util") {
+}
+
 polymer_modulizer("app") {
   js_file = "app.js"
   html_file = "app.html"

chrome/browser/resources/chromeos/edu_login/browser_proxy.js

+// Copyright 2020 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.
+
+import {addSingletonGetter, sendWithPromise} from 'chrome://resources/js/cr.m.js';
+import {ParentAccount} from './edu_login_util.js';
+
+/** @interface */
+export class EduAccountLoginBrowserProxy {
+  /**
+   * Send 'getParents' request to the handler. The promise will be resolved
+   * with the list of parents (Array<ParentAccount>).
+   * @return {Promise<Array<ParentAccount>>}
+   */
+  getParents() {}
+
+  /**
+   * Send parent credentials to get the reauth proof token. The promise will be
+   * resolved with the RAPT.
+   *
+   * @param {ParentAccount} parent
+   * @param {String} password parent password
+   * @return {Promise<string>}
+   */
+  parentSignin(parent, password) {}
+}
+
+/**
+ * @implements {EduAccountLoginBrowserProxy}
+ */
+export class EduAccountLoginBrowserProxyImpl {
+  /** @override */
+  getParents() {
+    return sendWithPromise('getParents');
+  }
+
+  /** @override */
+  parentSignin(parent, password) {
+    return sendWithPromise('parentSignin', parent, password);
+  }
+}
+
+addSingletonGetter(EduAccountLoginBrowserProxyImpl);

chrome/browser/resources/chromeos/edu_login/edu_login_util.js

+// Copyright 2020 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.
+
+/**
+ * Information for a parent account.
+ * @typedef {{
+ *   email: string,
+ *   displayName: string,
+ *   profileImageUrl: string,
+ *   obfuscatedGaiaId: string
+ * }}
+ */
+export let ParentAccount;

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

@@ -72,6 +72,9 @@ content::WebUIDataSource* CreateWebUIDataSource() {
   source->AddResourcePath("edu_login_template.js",
                           IDR_EDU_LOGIN_EDU_LOGIN_TEMPLATE_JS);
   source->AddResourcePath("edu_login_css.js", IDR_EDU_LOGIN_EDU_LOGIN_CSS_JS);
+  source->AddResourcePath("browser_proxy.js", IDR_EDU_LOGIN_BROWSER_PROXY_JS);
+  source->AddResourcePath("edu_login_util.js", IDR_EDU_LOGIN_EDU_LOGIN_UTIL_JS);
+
   AddEduStrings(source);
 #endif