Fix: Adding list of supported codecs for MP4 containers

net/base/mime_util.h

Index: net/base/mime_util.h
diff --git a/net/base/mime_util.h b/net/base/mime_util.h
index 9662e9656e397de2d48adedbfae590a3249ff4a7..b042390c676de8362da357f3a43940a98c41a413 100644
--- a/net/base/mime_util.h
+++ b/net/base/mime_util.h
@@ -85,6 +85,14 @@ NET_EXPORT bool IsSupportedStrictMediaMimeType(
     const std::string& mime_type,
     const std::vector<std::string>& codecs);
 
+// Check to see if the particular mp4 MIME type is in our list which only
+// supports certain subset of H.264 codecs. Returns true if and only if all the
+// codecs are supported for the specific MIME type and the codecs are RFC6381
+// compliant.
+NET_EXPORT bool IsSupportedStrictMP4MediaMimeType(
+    const std::string& mime_type,
+    const std::vector<std::string>& codecs);
+
 // Get the extensions associated with the given mime type. This should be passed
 // in lower case. There could be multiple extensions for a given mime type, like
 // "html,htm" for "text/html", or "txt,text,html,..." for "text/*".