[Chrome Apps] Test new window with about:blank.

Check using chrome.app.window.create() with the about:blank URL is not
allowed.

Bug: None.
Change-Id: Ib8ca494921ca588540857b11e81584e686ba590e
Reviewed-on: https://chromium-review.googlesource.com/995892Reviewed-by: Ben Wells <benwells@chromium.org>
Commit-Queue: Arthur Sonzogni <arthursonzogni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549537}

chrome/browser/apps/app_browsertest.cc

@@ -1408,4 +1408,8 @@ IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, SandboxedLocalFile) {
   ASSERT_TRUE(RunPlatformAppTest("platform_apps/sandboxed_local_file"));
 }
 
+IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, NewWindowAboutBlank) {
+  ASSERT_TRUE(RunPlatformAppTest("platform_apps/new_window_about_blank"));
+}
+
 }  // namespace extensions

chrome/test/data/extensions/platform_apps/new_window_about_blank/manifest.json

+{
+  "name": "Platform App Test: Use chrome.app.window.create() with about:blank.",
+  "manifest_version": 2,
+  "version": "1",
+  "app": {
+    "background": {
+      "scripts": ["test.js"]
+    }
+  }
+}

chrome/test/data/extensions/platform_apps/new_window_about_blank/test.js

+// Copyright (c) 2018 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.
+
+chrome.app.runtime.onLaunched.addListener(function() {
+  chrome.app.window.create('about:blank', {}, function (createdWindow) {
+    if (createdWindow) {
+      chrome.test.notifyFail("chrome.app.window.create() with about:blank " +
+                             "succeeded. That's not allowed.");
+    } else {
+      chrome.test.notifyPass();
+    }
+  })
+});