Fix media code to work with new ffmpeg.

media/filters/ffmpeg_glue.cc

Index: media/filters/ffmpeg_glue.cc
diff --git a/media/filters/ffmpeg_glue.cc b/media/filters/ffmpeg_glue.cc
index bd5590151fdf83319be9fb9cfbc7a0f5799cf7f1..853ff093e7aaaa820752f090400b829d30dde819 100644
--- a/media/filters/ffmpeg_glue.cc
+++ b/media/filters/ffmpeg_glue.cc
@@ -23,7 +23,7 @@ static int OpenContext(URLContext* h, const char* filename, int flags) {
     return AVERROR(EIO);
 
   h->priv_data = protocol;
-  h->flags = URL_RDONLY;
+  h->flags = AVIO_FLAG_READ;
   h->is_streamed = protocol->IsStreaming();
   return 0;
 }
@@ -118,6 +118,7 @@ static const char kProtocol[] = "http";
 static URLProtocol kFFmpegURLProtocol = {
   kProtocol,
   &OpenContext,
+  NULL,  // url_open2
   &ReadContext,
   &WriteContext,
   &SeekContext,
@@ -129,8 +130,7 @@ FFmpegGlue::FFmpegGlue() {
   av_log_set_level(AV_LOG_QUIET);
 
   // Register our protocol glue code with FFmpeg.
-  avcodec_init();
-  av_register_protocol2(&kFFmpegURLProtocol, sizeof(kFFmpegURLProtocol));
+  ffurl_register_protocol(&kFFmpegURLProtocol, sizeof(kFFmpegURLProtocol));
   av_lockmgr_register(&LockManagerOperation);
 
   // Now register the rest of FFmpeg.