libvpx: Pull from upstream

update_libvpx.sh

 #!/bin/bash -e
 #
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This tool is used to update libvpx source code with the latest git
 # repository.
 #
 # Make sure you run this in a svn checkout of deps/third_party/libvpx!
 
 # Usage:
 #
-# $ ./update_libvpx.sh [branch | revision | file containing a revision]
+# $ ./update_libvpx.sh [branch | revision | file or url containing a revision]
 # When specifying a branch it may be necessary to prefix with origin/
 
 # Tools required for running this tool:
 #
 # 1. Linux / Mac
 # 2. svn
 # 3. git
 
 export LC_ALL=C
 
 # Location for the remote git repository.
 GIT_REPO="http://git.chromium.org/webm/libvpx.git"
 
 GIT_BRANCH="origin/master"
 LIBVPX_SRC_DIR="source/libvpx"
 BASE_DIR=`pwd`
 
 if [ -n "$1" ]; then
   GIT_BRANCH="$1"
   if [ -f "$1"  ]; then
     GIT_BRANCH=$(<"$1")
+  elif [[ $1 = http* ]]; then
+    GIT_BRANCH=`curl $1`
   fi
 fi
 
 prev_hash="$(egrep "^Commit: [[:alnum:]]" README.chromium | awk '{ print $2 }')"
 echo "prev_hash:$prev_hash"
 
 rm -rf $(svn ls $LIBVPX_SRC_DIR)
 svn update $LIBVPX_SRC_DIR
 
 cd $LIBVPX_SRC_DIR
@@ skipping 39 matching lines @@
 # Update SVN with the added and deleted files.
 echo "$add" | xargs -I {} svn add --parents {}
 echo "$delete" | xargs -I {} svn rm {}
 
 # Find empty directories and remove them from SVN.
 find . -type d -empty -not -iwholename '*.svn*' -exec svn rm {} \;
 
 chmod 755 build/make/*.sh build/make/*.pl configure
 
 cd $BASE_DIR