Fix a couple of errors with bad Vorbis headers, and go through the associated...

README.chromium

Index: README.chromium
===================================================================
--- README.chromium	(revision 70194)
+++ README.chromium	(working copy)
@@ -53,6 +53,7 @@
        patch -p1 --no-backup-if-mismatch < ../patches/to_upstream/18_respect_swscale.patch
        patch -p1 --no-backup-if-mismatch < ../patches/from_upstream/19_vorbis_decode.patch
        patch -p1 --no-backup-if-mismatch < ../patches/from_upstream/20_r25798_ogg_data_offset.patch
+       patch -p1 --no-backup-if-mismatch < ../patches/to_upstream/21_vorbis_overflow.patch
        cd ..
 
 There is also a script "make_src_tree.sh" that automates most of the steps
@@ -288,6 +289,14 @@
        diff -wurp -N orig ffmpeg-mt
        diff -wurp -N orig ffmpeg-mt >patches/from_upstream/20_r25798_ogg_data_offset.patch
 
+       rm -rf orig
+       cp -R ffmpeg-mt orig
+       cd ffmpeg-mt
+       patch -p1 --no-backup-if-mismatch < ../patches/to_upstream/21_vorbis_overflow.patch
+       cd ..
+       diff -wurp -N orig ffmpeg-mt
+       diff -wurp -N orig ffmpeg-mt >patches/to_upstream/21_vorbis_overflow.patch
+
 Testing
   Updates should be tested against
   http://wiki.xiph.org/TheoraTestsuite