Initial commit of all previous Chrome build scripts.

chromium/patches/from_upstream/38_webm_cues_before_first_cluster.patch

+diff -wurp -N orig/libavformat/matroskadec.c ffmpeg/libavformat/matroskadec.c
+--- orig/libavformat/matroskadec.c      2011-09-30 14:39:42.993442677 -0700
++++ ffmpeg/libavformat/matroskadec.c    2011-09-30 14:41:40.483401611 -0700
+@@ -1229,21 +1229,12 @@ static void matroska_execute_seekhead(Ma
+     }
+ }
+ 
+-static void matroska_parse_cues(MatroskaDemuxContext *matroska) {
+-    EbmlList *seekhead_list = &matroska->seekhead;
+-    MatroskaSeekhead *seekhead = seekhead_list->elem;
++static void matroska_add_index_entries(MatroskaDemuxContext *matroska) {
+     EbmlList *index_list;
+     MatroskaIndex *index;
+     int index_scale = 1;
+     int i, j;
+ 
+-    for (i = 0; i < seekhead_list->nb_elem; i++)
+-        if (seekhead[i].id == MATROSKA_ID_CUES)
+-            break;
+-    assert(i <= seekhead_list->nb_elem);
+-
+-    matroska_parse_seekhead_entry(matroska, i);
+-
+     index_list = &matroska->index;
+     index = index_list->elem;
+     if (index_list->nb_elem
+@@ -1265,6 +1256,20 @@ static void matroska_parse_cues(Matroska
+     }
+ }
+ 
++static void matroska_parse_cues(MatroskaDemuxContext *matroska) {
++    EbmlList *seekhead_list = &matroska->seekhead;
++    MatroskaSeekhead *seekhead = seekhead_list->elem;
++    int i;
++
++    for (i = 0; i < seekhead_list->nb_elem; i++)
++        if (seekhead[i].id == MATROSKA_ID_CUES)
++            break;
++    assert(i <= seekhead_list->nb_elem);
++
++    matroska_parse_seekhead_entry(matroska, i);
++    matroska_add_index_entries(matroska);
++}
++
+ static int matroska_aac_profile(char *codec_id)
+ {
+     static const char * const aac_profiles[] = { "MAIN", "LC", "SSR" };
+@@ -1660,6 +1665,8 @@ static int matroska_read_header(AVFormat
+             max_start = chapters[i].start;
+         }
+ 
++    matroska_add_index_entries(matroska);
++
+     matroska_convert_tags(s);
+ 
+     return 0;