Enable VP9 in MP4 by default

media/base/mime_util_internal.cc

 // Copyright 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 "media/base/mime_util_internal.h"
 
 #include <map>
 
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 71 matching lines @@
 
   return kStringToCodecMap;
 }
 
 static bool ParseVp9CodecID(const std::string& mime_type_lower_case,
                             const std::string& codec_id,
                             VideoCodecProfile* out_profile,
                             uint8_t* out_level,
                             VideoColorSpace* out_color_space) {
   if (mime_type_lower_case == "video/mp4") {
-    if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-            switches::kEnableVp9InMp4)) {
-      // Only new style is allowed for mp4.
-      return ParseNewStyleVp9CodecID(codec_id, out_profile, out_level,
-                                     out_color_space);
-    }
+    // Only new style is allowed for mp4.
+    return ParseNewStyleVp9CodecID(codec_id, out_profile, out_level,
+                                   out_color_space);
   } else if (mime_type_lower_case == "video/webm") {
     if (HasNewVp9CodecStringSupport() &&
         ParseNewStyleVp9CodecID(codec_id, out_profile, out_level,
                                 out_color_space)) {
       return true;
     }
 
     return ParseLegacyVp9CodecID(codec_id, out_profile, out_level);
   }
   return false;
@@ skipping 862 matching lines @@
   if (mime_type == "audio/flac") {
     *default_codec = MimeUtil::FLAC;
     return true;
   }
 
   return false;
 }
 
 }  // namespace internal
 }  // namespace media