Remove old Sleep and PostDelayedTask interfaces that use int ms instead of TimeDelta.

base/threading/platform_thread_posix.cc

 // Copyright (c) 2012 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 "base/threading/platform_thread.h"
 
 #include <errno.h>
 #include <sched.h>
 
 #include "base/lazy_instance.h"
@@ skipping 158 matching lines @@
   return reinterpret_cast<int64>(pthread_self());
 #endif
 }
 
 // static
 void PlatformThread::YieldCurrentThread() {
   sched_yield();
 }
 
 // static
-void PlatformThread::Sleep(int duration_ms) {
-  // NOTE: This function will be supplanted by the other version of Sleep
-  // in the future.  See issue 108171 for more information.
-  Sleep(TimeDelta::FromMilliseconds(duration_ms));
-}
-
-// static
 void PlatformThread::Sleep(TimeDelta duration) {
   struct timespec sleep_time, remaining;
 
   // Break the duration into seconds and nanoseconds.
   // NOTE: TimeDelta's microseconds are int64s while timespec's
   // nanoseconds are longs, so this unpacking must prevent overflow.
   sleep_time.tv_sec = duration.InSeconds();
   duration -= TimeDelta::FromSeconds(sleep_time.tv_sec);
   sleep_time.tv_nsec = duration.InMicroseconds() * 1000;  // nanoseconds
 
@@ skipping 86 matching lines @@
 #if !defined(OS_MACOSX)
 // Mac OS X uses lower-level mach APIs.
 
 // static
 void PlatformThread::SetThreadPriority(PlatformThreadHandle, ThreadPriority) {
   // TODO(crogers): Implement, see http://crbug.com/116172
 }
 #endif
 
 }  // namespace base