Revert "Chromium changes to statically link 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 7643f2356df652029e99b849415b07fb5d23f18d..20ebeafa9aa4af65be54fb461e8367d43d24e1b3 100644
--- a/media/filters/ffmpeg_glue.cc
+++ b/media/filters/ffmpeg_glue.cc
@@ -96,6 +96,9 @@ class FFmpegInitializer {
 
   FFmpegInitializer()
       : initialized_(false) {
+    // Before doing anything disable logging as it interferes with layout tests.
+    av_log_set_level(AV_LOG_QUIET);
+
     // Register our protocol glue code with FFmpeg.
     if (av_lockmgr_register(&LockManagerOperation) != 0)
       return;