Move many old cherry picks in tree for archival/support purposes

Patches/LineageOS-11.0/android_external_libvpx/253499.patch

@@ -0,0 +1,33 @@
+From 2acc89d321bf0d1ea4bc08bc4620f165cb7e65f3 Mon Sep 17 00:00:00 2001
+From: Frank Galligan <fgalligan@google.com>
+Date: Fri, 10 May 2019 17:42:46 -0700
+Subject: [PATCH] Check there is only one settings per ContentCompression
+
+This fixes a memory leak with invalid files.
+
+BUG: 127702368
+
+Merged-In: Id7de1f8c35ef2f6458c6fb6c7751a84fe43ed1cc
+Change-Id: I73bd34e212d74ffcf8d428e01b5269037147bf8c
+(cherry picked from commit 0fbbf3c3e05647aa10174a1876e02ba6a2ec631d)
+---
+ libwebm/mkvparser.cpp | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/libwebm/mkvparser.cpp b/libwebm/mkvparser.cpp
+index f0cd97f..e65e9c7 100644
+--- a/libwebm/mkvparser.cpp
++++ b/libwebm/mkvparser.cpp
+@@ -4284,6 +4284,12 @@ long ContentEncoding::ParseCompressionEntry(long long start, long long size,
+         return status;
+       }
+ 
++      // There should be only one settings element per content compression.
++      if (compression->settings != NULL) {
++        delete[] buf;
++        return E_FILE_FORMAT_INVALID;
++      }
++
+       compression->settings = buf;
+       compression->settings_len = buflen;
+     }