Convert uses of int ms to TimeDelta in media/audio.

media/audio/audio_input_unittest.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/basictypes.h"
 #include "base/environment.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/threading/platform_thread.h"
 #include "media/audio/audio_io.h"
@@ skipping 141 matching lines @@
   if (!CanRunAudioTests(audio_man.get()))
     return;
   MessageLoop message_loop(MessageLoop::TYPE_DEFAULT);
   AudioInputStream* ais = CreateTestAudioInputStream(audio_man.get());
   EXPECT_TRUE(ais->Open());
 
   TestInputCallback test_callback(kSamplesPerPacket * 4);
   ais->Start(&test_callback);
   // Verify at least 500ms worth of audio was recorded, after giving sufficient
   // extra time.
-  message_loop.PostDelayedTask(FROM_HERE, MessageLoop::QuitClosure(), 590);
+  message_loop.PostDelayedTask(
+      FROM_HERE,
+      MessageLoop::QuitClosure(),
+      base::TimeDelta::FromMilliseconds(590));
   message_loop.Run();
   EXPECT_GE(test_callback.callback_count(), 10);
   EXPECT_FALSE(test_callback.had_error());
 
   ais->Stop();
   ais->Close();
 }