Initial commit of all previous Chrome build scripts.

chromium/patches/ugly/10_aac_oob_read.patch

+diff -wurp -N orig/libavcodec/aacdec.c ffmpeg/libavcodec/aacdec.c
+--- orig/libavcodec/aacdec.c    2011-07-12 20:48:08.424231641 -0700
++++ ffmpeg/libavcodec/aacdec.c  2011-07-12 20:48:08.504181427 -0700
+@@ -471,6 +471,7 @@ static int decode_audio_specific_config(
+     av_dlog(avctx, "\n");
+ 
+     init_get_bits(&gb, data, data_size * 8);
++    gb.buffer_enforcing = 1;
+ 
+     if ((i = ff_mpeg4audio_get_config(m4ac, data, data_size)) < 0)
+         return -1;
+@@ -2131,6 +2132,12 @@ static int aac_decode_frame_int(AVCodecC
+     ac->tags_mapped = 0;
+     // parse
+     while ((elem_type = get_bits(gb, 3)) != TYPE_END) {
++#ifdef ALT_BITSTREAM_READER
++        if (gb->buffer_exhausted) {
++            av_log(ac->avctx, AV_LOG_ERROR, "out of bounds read: index, size: %d, %d\n", gb->index, gb->size_in_bits);
++            return -1;
++        }
++#endif
+         elem_id = get_bits(gb, 4);
+ 
+         if (elem_type < TYPE_DSE) {
+@@ -2251,6 +2258,7 @@ static int aac_decode_frame(AVCodecConte
+     int err;
+ 
+     init_get_bits(&gb, buf, buf_size * 8);
++    gb.buffer_enforcing = 1;
+ 
+     if ((err = aac_decode_frame_int(avctx, data, data_size, &gb)) < 0)
+         return err;