Add mojo/c/system/{time.h,wait.h}.

mojo/edk/system/test/timeouts.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.
 
 // Test timeouts.
 
 #ifndef MOJO_EDK_SYSTEM_TEST_TIMEOUTS_H_
 #define MOJO_EDK_SYSTEM_TEST_TIMEOUTS_H_
 
-#include "mojo/public/c/system/types.h"
+#include "mojo/public/c/system/time.h"
 
 namespace mojo {
 namespace system {
 namespace test {
 
 MojoDeadline DeadlineFromMilliseconds(unsigned milliseconds);
 
 // A timeout smaller than |TestTimeouts::tiny_timeout()|, as a |MojoDeadline|.
 // Warning: This may lead to flakiness, but this is unavoidable if, e.g., you're
 // trying to ensure that functions with timeouts are reasonably accurate. We
 // want this to be as small as possible without causing too much flakiness.
 MojoDeadline EpsilonTimeout();
 
 // |TestTimeouts::tiny_timeout()|, as a |MojoDeadline|. (Expect this to be on
 // the order of 100 ms.)
 MojoDeadline TinyTimeout();
 
 // |TestTimeouts::action_timeout()|, as a |MojoDeadline|. (Expect this to be on
 // the order of 10 s.)
 MojoDeadline ActionTimeout();
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_TEST_TIMEOUTS_H_