Implements TestMessageLoop that flushes pending tasks on destruction.

base/test/test_message_loop.h

Index: base/test/test_message_loop.h
diff --git a/base/test/test_message_loop.h b/base/test/test_message_loop.h
new file mode 100644
index 0000000000000000000000000000000000000000..a56f0066320a87fdd574ab9a79c632cca9192d42
--- /dev/null
+++ b/base/test/test_message_loop.h
@@ -0,0 +1,29 @@
+// 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.
+
+#ifndef BASE_TEST_TEST_MESSAGE_LOOP_H_
+#define BASE_TEST_TEST_MESSAGE_LOOP_H_
+
+#include "base/message_loop/message_loop.h"
+
+namespace base {
+
+// TestMessageLoop is a convenience class for unittests that need to create a
+// message loop without a real thread backing it. For most tests,
+// it is sufficient to just instantiate TestMessageLoop as a member variable.
+//
+// TestMessageLoop will attempt to drain the underlying MessageLoop on
+// destruction for clean teardown of tests.
+class TestMessageLoop {
+ public:
+  TestMessageLoop();
+  explicit TestMessageLoop(MessageLoop::Type type);
+  ~TestMessageLoop();
+
+ private:
+  MessageLoop loop_;
+};
+
+}  // namespace base
+#endif  // BASE_TEST_TEST_MESSAGE_LOOP_H_

[danakj, 2016/04/11 21:56:06]

whitespace above this.

[alokp, 2016/04/11 22:15:26]

Done.