Implemented rest of webkit api/glue code needed for HTML5 media canPlayType().

net/base/mime_util.h

 // Copyright (c) 2006-2009 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.
 
 #ifndef NET_BASE_MIME_UTIL_H__
 #define NET_BASE_MIME_UTIL_H__
 
 #include <string>
 #include <vector>
 
@@ skipping 28 matching lines @@
 
 // Convenience function.
 bool IsSupportedMimeType(const std::string& mime_type);
 
 // Returns true if this the mime_type_pattern matches a given mime-type.
 // Checks for absolute matching and wildcards.  mime-types should be in
 // lower case.
 bool MatchesMimeType(const std::string &mime_type_pattern,
                      const std::string &mime_type);
 
+// Returns true if and only if all codecs are supported, false otherwise.
+bool AreSupportedMediaCodecs(const std::vector<std::string>& codecs);
+
 // Parses a codec string, populating |codecs_out| with the prefix of each codec
 // in the string |codecs_in|. For example, passed "aaa.b.c,dd.eee", |codecs_out|
 // will contain {"aaa", "dd"}.
 // See http://www.ietf.org/rfc/rfc4281.txt.
 void ParseCodecString(const std::string& codecs,
                       std::vector<std::string>* codecs_out);
 
 }  // namespace net
 
 #endif  // NET_BASE_MIME_UTIL_H__