libvpx: Add VP9 decoder.

source/libvpx/tools/vpx-astyle.sh

+#!/bin/sh
+set -e
+astyle --style=java --indent=spaces=2 --indent-switches\
+       --min-conditional-indent=0 \
+       --pad-oper --pad-header --unpad-paren \
+       --align-pointer=name \
+       --indent-preprocessor --convert-tabs --indent-labels \
+       --suffix=none --quiet --max-instatement-indent=80 "$@"
+# Disabled, too greedy?
+#sed -i 's;[[:space:]]\{1,\}\[;[;g' "$@"
+
+sed_i() {
+  # Incompatible sed parameter parsing.
+  if sed -i 2>&1 | grep -q 'requires an argument'; then
+    sed -i '' "$@"
+  else
+    sed -i "$@"
+  fi
+}
+
+sed_i -e 's/[[:space:]]\{1,\}\([,;]\)/\1/g' \
+      -e 's/[[:space:]]\{1,\}\([+-]\{2\};\)/\1/g' \
+      -e 's/,[[:space:]]*}/}/g' \
+      -e 's;//\([^/[:space:]].*$\);// \1;g' \
+      -e 's/^\(public\|private\|protected\):$/ \1:/g' \
+      -e 's/[[:space:]]\{1,\}$//g' \
+      "$@"