diff -r 000000000000 -r 6474c204b198 media/webrtc/trunk/tools/clang/plugins/tests/virtual_methods.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/webrtc/trunk/tools/clang/plugins/tests/virtual_methods.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,39 @@
+// 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.
+
+#ifndef VIRTUAL_METHODS_H_
+#define VIRTUAL_METHODS_H_
+
+// Should warn about virtual method usage.
+class VirtualMethodsInHeaders {
+ public:
+  // Don't complain about these.
+  virtual void MethodIsAbstract() = 0;
+  virtual void MethodHasNoArguments();
+  virtual void MethodHasEmptyDefaultImpl() {}
+
+  // But complain about this:
+  virtual bool ComplainAboutThis() { return true; }
+};
+
+// Complain on missing 'virtual' keyword in overrides.
+class WarnOnMissingVirtual : public VirtualMethodsInHeaders {
+ public:
+  void MethodHasNoArguments() override;
+};
+
+// Don't complain about things in a 'testing' namespace.
+namespace testing {
+struct TestStruct {};
+}  // namespace testing
+
+class VirtualMethodsInHeadersTesting : public VirtualMethodsInHeaders {
+ public:
+  // Don't complain about no virtual testing methods.
+  void MethodHasNoArguments();
+ private:
+  testing::TestStruct tester_;
+};
+
+#endif  // VIRTUAL_METHODS_H_