Bug 789077 - Remove sniffing for mp3 without ID3 because of false positives. r=cpearce

content/media/test/manifest.js

@@ -162,8 +162,6 @@ var gSnifferTests = [
   { name:"320x240.ogv", type:"video/ogg", width:320, height:240, duration:0.233, size:28942 },
   { name:"seek.webm", type:"video/webm", duration:3.966, size:215529 },
   { name:"short.mp4", type:"video/mp4", duration:0.2, size:29435},
-  // A mp3 file without id3 tags.
-  { name:"notags.mp3", type:"audio/mpeg", duration:0.28, size:2506},
   // A mp3 file with id3 tags.
   { name:"id3tags.mp3", type:"audio/mpeg", duration:0.28, size:3530},
   { name:"bogus.duh", type:"bogus/duh" }

toolkit/components/mediasniffer/nsMediaSniffer.cpp

@@ -27,8 +27,6 @@ nsMediaSniffer::nsMediaSnifferEntry nsMediaSniffer::sSnifferEntries[] = {
   PATTERN_ENTRY("\xFF\xFF\xFF\xFF\x00\x00\x00\x00\xFF\xFF\xFF\xFF", "RIFF\x00\x00\x00\x00WAVE", AUDIO_WAV),
   // WebM
   PATTERN_ENTRY("\xFF\xFF\xFF\xFF", "\x1A\x45\xDF\xA3", VIDEO_WEBM),
-  // mp3 without ID3 tags.
-  PATTERN_ENTRY("\xFF\xFB", "\xFF\xFA", AUDIO_MP3),
   // mp3 with ID3 tags, the string "ID3".
   PATTERN_ENTRY("\xFF\xFF\xFF", "ID3", AUDIO_MP3)
 };