Asynchronously resolve getAvailability callbacks.

content/browser/presentation/presentation_browsertest.cc

+// Copyright 2016 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 "content/public/browser/web_contents.h"
+#include "content/public/test/browser_test.h"
+#include "content/public/test/content_browser_test.h"
+#include "content/public/test/content_browser_test_utils.h"
+#include "content/public/test/test_navigation_observer.h"
+#include "content/shell/browser/shell.h"
+
+namespace content {
+
+using PresentationBrowserTest = ContentBrowserTest;
+
+// Regression test that verifies that calling getAvailability() twice on the
+// same PresentationRequest does not return an undefined object.
+// TODO(mlamouri,mfoltz), update the test after [SameObject] is used,
+// see https://crbug.com/653131
+IN_PROC_BROWSER_TEST_F(PresentationBrowserTest, AvailabilityNotUndefined) {
+  GURL test_url = GetTestUrl("", "hello.html");
+
+  TestNavigationObserver navigation_observer(shell()->web_contents(), 1);
+  shell()->LoadURL(test_url);
+
+  navigation_observer.Wait();
+
+  ExecuteScriptAndGetValue(shell()->web_contents()->GetMainFrame(),
+                           "const r = new PresentationRequest('foo.html')");
+
+  ExecuteScriptAndGetValue(shell()->web_contents()->GetMainFrame(),
+                           "const p1 = r.getAvailability();");
+
+  ExecuteScriptAndGetValue(shell()->web_contents()->GetMainFrame(),
+                           "const p2 = r.getAvailability()");
+
+  bool is_p1_undefined = false;
+  ExecuteScriptAndGetValue(shell()->web_contents()->GetMainFrame(),
+                           "p1 === undefined")->GetAsBoolean(&is_p1_undefined);
+
+  bool is_p2_undefined = false;
+  ExecuteScriptAndGetValue(shell()->web_contents()->GetMainFrame(),
+                           "p2 === undefined")->GetAsBoolean(&is_p2_undefined);
+
+  EXPECT_FALSE(is_p1_undefined);
+  EXPECT_FALSE(is_p2_undefined);
+}
+
+}  // namespace content