Convert use of int ms to TimeDelta in scattered chromium files.

third_party/leveldatabase/env_chromium.cc

 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.
 
 #include <deque>
 #include <errno.h>
 #include <stdio.h>
 #include "base/at_exit.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 430 matching lines @@
     *result = new ChromiumLogger(fname);
     return Status::OK();
   }
 
   virtual uint64_t NowMicros() {
     return ::base::TimeTicks::Now().ToInternalValue();
   }
 
   virtual void SleepForMicroseconds(int micros) {
     // Round up to the next millisecond.
-    ::base::PlatformThread::Sleep((micros + 999) / 1000);
+    ::base::PlatformThread::Sleep(::base::TimeDelta::FromMicroseconds(micros));
   }
 
  private:
   // BGThread() is the body of the background thread
   void BGThread();
   static void BGThreadWrapper(void* arg) {
     reinterpret_cast<ChromiumEnv*>(arg)->BGThread();
   }
 
   FilePath test_directory_;
@@ skipping 85 matching lines @@
 ::base::LazyInstance<ChromiumEnv>::Leaky
     default_env = LAZY_INSTANCE_INITIALIZER;
 
 }
 
 Env* Env::Default() {
   return default_env.Pointer();
 }
 
 }