Move mojo/public/c/environment/tests to mojo/public/c/tests/environment.

mojo/public/c/tests/environment/async_waiter_perftest_helpers.cc

 // 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.
 
-#include "mojo/public/c/environment/tests/async_waiter_perftest_helpers.h"
+#include "mojo/public/c/tests/environment/async_waiter_perftest_helpers.h"
 
 #include <assert.h>
 #include <mojo/system/handle.h>
 #include <mojo/system/message_pipe.h>
 
 #include <vector>
 
 #include "mojo/public/cpp/system/macros.h"
 
 #undef CHECK_OK
@@ skipping 111 matching lines @@
 
 uint64_t DoAsyncWaiterPerfTest(const MojoAsyncWaiter* async_waiter,
                                uint32_t num_handles,
                                std::function<void()> run_loop_function) {
   return AsyncWaiterPerfTest(async_waiter, num_handles, run_loop_function)
       .DoIt();
 }
 
 }  // namespace test
 }  // namespace mojo