Do not start RunLoop of MessagePumpForUI in NestedMessagePumpAndroid

content/test/content_browser_test_test.cc

 // Copyright (c) 2011 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/test/content_browser_test.h"
 
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test_utils.h"
+#include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 IN_PROC_BROWSER_TEST_F(ContentBrowserTest, MANUAL_ShouldntRun) {
   // Ensures that tests with MANUAL_ prefix don't run automatically.
   ASSERT_TRUE(false);
 }
 
@@ skipping 18 matching lines @@
 };
 
 IN_PROC_BROWSER_TEST_F(ContentBrowserTestSanityTest, Basic) {
   Test();
 }
 
 IN_PROC_BROWSER_TEST_F(ContentBrowserTestSanityTest, SingleProcess) {
   Test();
 }
 
+void CallbackChecker(bool* non_nested_task_ran) {

[ncarter (slow), 2014/11/18 18:02:53]

This should be in an anonymous namespace {}, to prevent link-time collisions
with a similarly named function in some other compilation unit.

[Jaekyun Seok (inactive), 2014/11/18 22:38:22]

Done.

+  *non_nested_task_ran = true;
+}
+
+IN_PROC_BROWSER_TEST_F(ContentBrowserTestSanityTest, NonNestableTask) {
+  bool non_nested_task_ran = false;
+  base::MessageLoop::current()->PostNonNestableTask(
+      FROM_HERE, base::Bind(&CallbackChecker, &non_nested_task_ran));
+  content::RunAllPendingInMessageLoop();
+  ASSERT_TRUE(non_nested_task_ran);
+}
+
 }  // namespace content