Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/build/make/gen_msvs_def.sh

Index: third_party/libvpx/source/libvpx/build/make/gen_msvs_def.sh
diff --git a/third_party/libvpx/source/libvpx/build/make/gen_msvs_def.sh b/third_party/libvpx/source/libvpx/build/make/gen_msvs_def.sh
new file mode 100755
index 0000000000000000000000000000000000000000..4defcc2e7c7e5f25339c5a23ac9a57b4c7aec36f
--- /dev/null
+++ b/third_party/libvpx/source/libvpx/build/make/gen_msvs_def.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+##
+##  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+##
+##  Use of this source code is governed by a BSD-style license
+##  that can be found in the LICENSE file in the root of the source
+##  tree. An additional intellectual property rights grant can be found
+##  in the file PATENTS.  All contributing project authors may
+##  be found in the AUTHORS file in the root of the source tree.
+##
+
+
+self=$0
+self_basename=${self##*/}
+EOL=$'\n'
+
+show_help() {
+    cat <<EOF
+Usage: ${self_basename} [options] file1 [file2 ...]
+
+This script generates a MSVC module definition file containing a list of symbols
+to export from a DLL. Source files are technically bash scripts (and thus may
+use #comment syntax) but in general, take the form of a list of symbols:
+
+  <kind> symbol1 [symbol2, symbol3, ...]
+
+where <kind> is either 'text' or 'data'
+
+
+Options:
+    --help                      Print this message
+    --out=filename              Write output to a file [stdout]
+    --name=project_name         Name of the library (required)
+EOF
+    exit 1
+}
+
+die() {
+    echo "${self_basename}: $@"
+    exit 1
+}
+
+die_unknown(){
+    echo "Unknown option \"$1\"."
+    echo "See ${self_basename} --help for available options."
+    exit 1
+}
+
+text() {
+    for sym in "$@"; do
+        echo "  $sym" >> ${outfile}
+    done
+}
+
+data() {
+    for sym in "$@"; do
+        printf "  %-40s DATA\n" "$sym" >> ${outfile}
+    done
+}
+
+# Process command line
+for opt in "$@"; do
+    optval="${opt#*=}"
+    case "$opt" in
+    --help|-h) show_help
+    ;;
+    --out=*) outfile="$optval"
+    ;;
+    --name=*) name="${optval}"
+    ;;
+     -*) die_unknown $opt
+    ;;
+    *) file_list[${#file_list[@]}]="$opt"
+    esac
+done
+outfile=${outfile:-/dev/stdout}
+[ -n "$name" ] || die "Library name (--name) must be specified!"
+
+echo "LIBRARY ${name}" > ${outfile}
+echo "EXPORTS" >> ${outfile}
+for f in "${file_list[@]}"; do
+    . $f
+done