Adding check for MIME types that do not take codecs parameter

net/base/mime_util.cc

 // Copyright (c) 2012 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 <algorithm>
 #include <iterator>
 #include <map>
 #include <string>
 
 #include "base/containers/hash_tables.h"
@@ skipping 64 matching lines @@
 
   void ParseCodecString(const std::string& codecs,
                         std::vector<std::string>* codecs_out,
                         bool strip);
 
   bool IsStrictMediaMimeType(const std::string& mime_type) const;
   bool IsSupportedStrictMediaMimeType(
       const std::string& mime_type,
       const std::vector<std::string>& codecs) const;
 
+  bool MimeTypeDoesNotNeedCodecs(const std::string& mime_type) const;
+
   void RemoveProprietaryMediaTypesAndCodecsForTests();
 
  private:
   friend struct base::DefaultLazyInstanceTraits<MimeUtil>;
 
   typedef base::hash_set<std::string> MimeMappings;
   typedef std::map<std::string, MimeMappings> StrictMappings;
 
   MimeUtil();
 
@@ skipping 336 matching lines @@
   const char* codecs_list;
 };
 
 static const MediaFormatStrict format_codec_mappings[] = {
   { "video/webm", "opus,vorbis,vp8,vp8.0,vp9,vp9.0" },
   { "audio/webm", "opus,vorbis" },
   { "audio/wav", "1" },
   { "audio/x-wav", "1" },
   { "video/ogg", "opus,theora,vorbis" },
   { "audio/ogg", "opus,vorbis" },
-  { "application/ogg", "opus,theora,vorbis" }
+  { "application/ogg", "opus,theora,vorbis" },
+  { "audio/mpeg", "" },
+  { "audio/mp3", "" },
+  { "audio/x-mp3", "" }
 };
 
 MimeUtil::MimeUtil() {
   InitializeMimeTypeMaps();
 }
 
 // static
 bool MimeUtil::AreSupportedCodecs(const MimeMappings& supported_codecs,
                                   const std::vector<std::string>& codecs) {
   for (size_t i = 0; i < codecs.size(); ++i) {
@@ skipping 251 matching lines @@
 }
 
 bool MimeUtil::IsSupportedStrictMediaMimeType(
     const std::string& mime_type,
     const std::vector<std::string>& codecs) const {
   StrictMappings::const_iterator it = strict_format_map_.find(mime_type);
   return (it != strict_format_map_.end()) &&
       AreSupportedCodecs(it->second, codecs);
 }
 
+bool MimeUtil::MimeTypeDoesNotNeedCodecs(const std::string& mime_type) const {
+  StrictMappings::const_iterator it = strict_format_map_.find(mime_type);
+  return (it != strict_format_map_.end()) && it->second.empty();
+}
+
 void MimeUtil::RemoveProprietaryMediaTypesAndCodecsForTests() {
   for (size_t i = 0; i < arraysize(proprietary_media_types); ++i) {
     non_image_map_.erase(proprietary_media_types[i]);
     media_map_.erase(proprietary_media_types[i]);
   }
   for (size_t i = 0; i < arraysize(proprietary_media_codecs); ++i)
     codecs_map_.erase(proprietary_media_codecs[i]);
 }
 
 //----------------------------------------------------------------------------
@@ skipping 60 matching lines @@
 
 bool IsStrictMediaMimeType(const std::string& mime_type) {
   return g_mime_util.Get().IsStrictMediaMimeType(mime_type);
 }
 
 bool IsSupportedStrictMediaMimeType(const std::string& mime_type,
                                     const std::vector<std::string>& codecs) {
   return g_mime_util.Get().IsSupportedStrictMediaMimeType(mime_type, codecs);
 }
 
+bool MimeTypeDoesNotNeedCodecs(const std::string& mime_type) {
+  return g_mime_util.Get().MimeTypeDoesNotNeedCodecs(mime_type);
+}
+
 void ParseCodecString(const std::string& codecs,
                       std::vector<std::string>* codecs_out,
                       const bool strip) {
   g_mime_util.Get().ParseCodecString(codecs, codecs_out, strip);
 }
 
 namespace {
 
 // From http://www.w3schools.com/media/media_mimeref.asp and
 // http://plugindoc.mozdev.org/winmime.php
@@ skipping 225 matching lines @@
   post_data->append("\r\n" + value + "\r\n");
 }
 
 void AddMultipartFinalDelimiterForUpload(const std::string& mime_boundary,
                                          std::string* post_data) {
   DCHECK(post_data);
   post_data->append("--" + mime_boundary + "--\r\n");
 }
 
 }  // namespace net