Support 420mpeg2 Y4M input in FileVideoCaptureDevice

media/capture/video/file_video_capture_device.cc

 // Copyright 2013 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/capture/video/file_video_capture_device.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 73 matching lines @@
         break;
       }
       case 'I':
         // Interlacing is ignored, but we don't like mixed modes.
         CHECK_NE(token[0], 'm');
         break;
       case 'A':
         // Pixel aspect ratio ignored.
         break;
       case 'C':
-        CHECK(token == "420" || token == "420jpeg" || token == "420paldv")
+        CHECK(token == "420" || token == "420jpeg" || token == "420mpeg2" ||
+              token == "420paldv")

[mcasas, 2016/12/20 19:57:19]

Funny formatting, but if git cl format media is
ok with this, I'm fine too.

             << token;  // Only I420 is supported, and we fudge the variants.
         break;
       default:
         break;
     }
     // We're done if we have found a newline character right after the token.
     if (file_header[blank_position] == '\n')
       break;
     index = blank_position + 1;
   }
@@ skipping 281 matching lines @@
     if (next_frame_time_ < current_time)
       next_frame_time_ = current_time;
   }
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::Bind(&FileVideoCaptureDevice::OnCaptureTask,
                             base::Unretained(this)),
       next_frame_time_ - current_time);
 }
 
 }  // namespace media