Mojo: Move public/tests/test_{support,utils}.* to public/{c,cpp}/test_support.

mojo/public/cpp/test_support/test_support.h

+// Copyright 2014 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 MOJO_PUBLIC_CPP_TEST_SUPPORT_TEST_SUPPORT_H_
+#define MOJO_PUBLIC_CPP_TEST_SUPPORT_TEST_SUPPORT_H_
+
+#include "mojo/public/c/test_support/test_support.h"
+
+namespace mojo {
+namespace test {
+
+inline void LogPerfResult(const char* test_name,
+                          double value,
+                          const char* units) {
+  MojoTestSupportLogPerfResult(test_name, value, units);
+}
+
+}  // namespace test
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_CPP_TEST_SUPPORT_TEST_SUPPORT_H_