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

mojo/public/cpp/test_support/test_utils.h

 // Copyright 2013 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_TESTS_TEST_UTILS_H_
-#define MOJO_PUBLIC_TESTS_TEST_UTILS_H_
+#ifndef MOJO_PUBLIC_CPP_TEST_SUPPORT_TEST_UTILS_H_
+#define MOJO_PUBLIC_CPP_TEST_SUPPORT_TEST_UTILS_H_
 
 #include <string>
 
 #include "mojo/public/cpp/system/core.h"
 
 namespace mojo {
 namespace test {
 
 // Writes a message to |handle| with message data |text|. Returns true on
 // success.
@@ skipping 12 matching lines @@
 // performance appropriately. (This actually runs |single_iteration| for a fixed
 // amount of time and reports the number of iterations per unit time.)
 typedef void (*PerfTestSingleIteration)(void* closure);
 void IterateAndReportPerf(const char* test_name,
                           PerfTestSingleIteration single_iteration,
                           void* closure);
 
 }  // namespace test
 }  // namespace mojo
 
-#endif  // MOJO_PUBLIC_TESTS_TEST_UTILS_H_
+#endif  // MOJO_PUBLIC_CPP_TEST_SUPPORT_TEST_UTILS_H_