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diff -up chromium-64.0.3282.119/media/base/mime_util_internal.cc.mp3 chromium-64.0.3282.119/media/base/mime_util_internal.cc
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--- chromium-64.0.3282.119/media/base/mime_util_internal.cc.mp3 2018-01-24 15:05:48.000000000 -0500
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+++ chromium-64.0.3282.119/media/base/mime_util_internal.cc 2018-01-25 11:18:12.354147726 -0500
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@@ -279,15 +279,19 @@ void MimeUtil::AddSupportedMediaFormats(
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CodecSet webm_codecs(webm_audio_codecs);
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webm_codecs.insert(webm_video_codecs.begin(), webm_video_codecs.end());
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-#if BUILDFLAG(USE_PROPRIETARY_CODECS)
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const CodecSet mp3_codecs{MP3};
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+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
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const CodecSet aac{MPEG2_AAC, MPEG4_AAC};
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+#else
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+ const CodecSet aac{};
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+#endif
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+ CodecSet mp4_audio_codecs(aac);
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+ mp4_audio_codecs.emplace(MP3);
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+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
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CodecSet avc_and_aac(aac);
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avc_and_aac.emplace(H264);
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- CodecSet mp4_audio_codecs(aac);
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- mp4_audio_codecs.emplace(MP3);
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mp4_audio_codecs.emplace(FLAC);
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#if BUILDFLAG(ENABLE_AC3_EAC3_AUDIO_DEMUXING)
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mp4_audio_codecs.emplace(AC3);
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@@ -329,10 +333,10 @@ void MimeUtil::AddSupportedMediaFormats(
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AddContainerWithCodecs("application/ogg", ogg_codecs, false);
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AddContainerWithCodecs("audio/flac", implicit_codec, false);
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-#if BUILDFLAG(USE_PROPRIETARY_CODECS)
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AddContainerWithCodecs("audio/mpeg", mp3_codecs, true); // Allow "mp3".
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AddContainerWithCodecs("audio/mp3", implicit_codec, true);
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AddContainerWithCodecs("audio/x-mp3", implicit_codec, true);
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+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
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AddContainerWithCodecs("audio/aac", implicit_codec, true); // AAC / ADTS.
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AddContainerWithCodecs("audio/mp4", mp4_audio_codecs, true);
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DCHECK(!mp4_video_codecs.empty());
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@@ -970,7 +974,6 @@ bool MimeUtil::IsCodecProprietary(Codec
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case INVALID_CODEC:
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case AC3:
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case EAC3:
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- case MP3:
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case MPEG2_AAC:
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case MPEG4_AAC:
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case H264:
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@@ -978,6 +981,7 @@ bool MimeUtil::IsCodecProprietary(Codec
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case DOLBY_VISION:
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return true;
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+ case MP3:
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case PCM:
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case VORBIS:
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case OPUS:
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