Convert media constants to constexpr.

media/filters/ffmpeg_demuxer_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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <deque>
 #include <string>
@@ skipping 535 matching lines @@
   CreateDemuxer("bear.ogv");
   InitializeDemuxer();
 
   // Attempt a read from the video stream and run the message loop until done.
   DemuxerStream* video = demuxer_->GetStream(DemuxerStream::VIDEO);
   DemuxerStream* audio = demuxer_->GetStream(DemuxerStream::AUDIO);
 
   // Run the test twice with a seek in between.
   for (int i = 0; i < 2; ++i) {
     audio->Read(
-        NewReadCBWithCheckedDiscard(FROM_HERE, 40, 0, kInfiniteDuration(),
-                                    true));
+        NewReadCBWithCheckedDiscard(FROM_HERE, 40, 0, kInfiniteDuration, true));
     base::RunLoop().Run();
-    audio->Read(
-        NewReadCBWithCheckedDiscard(FROM_HERE, 41, 2903, kInfiniteDuration(),
-                                    true));
+    audio->Read(NewReadCBWithCheckedDiscard(FROM_HERE, 41, 2903,
+                                            kInfiniteDuration, true));
     base::RunLoop().Run();
     audio->Read(NewReadCBWithCheckedDiscard(
         FROM_HERE, 173, 5805, base::TimeDelta::FromMicroseconds(10159), true));
     base::RunLoop().Run();
 
     audio->Read(NewReadCB(FROM_HERE, 148, 18866, true));
     base::RunLoop().Run();
     EXPECT_EQ(base::TimeDelta::FromMicroseconds(-15964),
               demuxer_->start_time());
 
@@ skipping 665 matching lines @@
 
   const MediaTrack& audio_track = *(media_tracks_->tracks()[1]);
   EXPECT_EQ(audio_track.type(), MediaTrack::Audio);
   EXPECT_EQ(audio_track.bytestream_track_id(), 2);
   EXPECT_EQ(audio_track.kind(), "main");
   EXPECT_EQ(audio_track.label(), "");
   EXPECT_EQ(audio_track.language(), "");
 }
 
 }  // namespace media