Delete mojo::system::test::PostTaskAndWait().

mojo/edk/system/test_utils.cc

 // 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.
 
 #include "mojo/edk/system/test_utils.h"
 
-#include "base/bind.h"
-#include "base/callback.h"
-#include "base/synchronization/waitable_event.h"
 #include "base/test/test_timeouts.h"
 #include "build/build_config.h"
 
 namespace mojo {
 namespace system {
 namespace test {
 
-namespace {
-
-void PostTaskAndWaitHelper(base::WaitableEvent* event,
-                           const base::Closure& task) {
-  task.Run();
-  event->Signal();
-}
-
-}  // namespace
-
-void PostTaskAndWait(scoped_refptr<base::TaskRunner> task_runner,
-                     const tracked_objects::Location& from_here,
-                     const base::Closure& task) {
-  base::WaitableEvent event(false, false);
-  task_runner->PostTask(from_here,
-                        base::Bind(&PostTaskAndWaitHelper, &event, task));
-  event.Wait();
-}
-
 base::TimeDelta EpsilonTimeout() {
 // Originally, our epsilon timeout was 10 ms, which was mostly fine but flaky on
 // some Windows bots. I don't recall ever seeing flakes on other bots. At 30 ms
 // tests seem reliable on Windows bots, but not at 25 ms. We'd like this timeout
 // to be as small as possible (see the description in the .h file).
 //
 // Currently, |tiny_timeout()| is usually 100 ms (possibly scaled under ASAN,
 // etc.). Based on this, set it to (usually be) 30 ms on Windows and 20 ms
 // elsewhere.
 #if defined(OS_WIN) || defined(OS_ANDROID)
   return (TestTimeouts::tiny_timeout() * 3) / 10;
 #else
   return (TestTimeouts::tiny_timeout() * 2) / 10;
 #endif
 }
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo