Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/build/make/ads2armasm_ms.pl

Index: third_party/libvpx/source/libvpx/build/make/ads2armasm_ms.pl
diff --git a/third_party/libvpx/source/libvpx/build/make/ads2armasm_ms.pl b/third_party/libvpx/source/libvpx/build/make/ads2armasm_ms.pl
new file mode 100755
index 0000000000000000000000000000000000000000..2a2c470ff88a5d1b548a03916174dbb0936cfaf9
--- /dev/null
+++ b/third_party/libvpx/source/libvpx/build/make/ads2armasm_ms.pl
@@ -0,0 +1,39 @@
+#!/usr/bin/env perl
+##
+##  Copyright (c) 2013 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.
+##
+
+use FindBin;
+use lib $FindBin::Bin;
+use thumb;
+
+print "; This file was created from a .asm file\n";
+print ";  using the ads2armasm_ms.pl script.\n";
+
+while (<STDIN>)
+{
+    undef $comment;
+    undef $line;
+
+    s/REQUIRE8//;
+    s/PRESERVE8//;
+    s/^\s*ARM\s*$//;
+    s/AREA\s+\|\|(.*)\|\|/AREA |$1|/;
+    s/qsubaddx/qsax/i;
+    s/qaddsubx/qasx/i;
+
+    thumb::FixThumbInstructions($_, 1);
+
+    s/ldrneb/ldrbne/i;
+    s/ldrneh/ldrhne/i;
+    s/^(\s*)ENDP.*/$&\n$1ALIGN 4/;
+
+    print;
+}
+