Point to newer git-1.8.0_bin directory.

update_depot_tools

 #!/usr/bin/env bash
 # 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 script will try to sync the bootstrap directories and then defer control.
 
 if [ "$USER" == "root" ];
 then
   echo Running depot tools as root is sad.
@@ skipping 12 matching lines @@
 MINGW=$?
 
 CANONICAL_GIT_URL="https://chromium.googlesource.com/chromium/tools/depot_tools.git"
 
 SVN="svn"
 if [ -d "$base_dir/svn_bin" -a $MINGW = 0 ]; then
   SVN="$base_dir/svn_bin/svn.exe"
 fi
 
 GIT="git"
-if [ -d "$base_dir/git_bin" -a $MINGW = 0 ]; then
-  GIT="$base_dir/git_bin/bin/git.exe"
+if [ -d "$base_dir/git-1.8.0_bin" -a $MINGW = 0 ]; then
+  GIT="$base_dir/git-1.8.0_bin/bin/git.exe"
 fi
 
 # Test git and git --version.
 function test_git {
   local GITV
   GITV="$("$GIT" --version)" || {
     echo "git isn't installed, please install it"
     exit 1
   }
 
@@ skipping 85 matching lines @@
   # Update the root directory to stay up-to-date with the latest depot_tools.
   BEFORE_REVISION=$(get_svn_revision)
   "$SVN" -q up "$base_dir"
   AFTER_REVISION=$(get_svn_revision)
   if [[ "$BEFORE_REVISION" != "$AFTER_REVISION" ]]; then
     echo "Depot Tools has been updated to revision $AFTER_REVISION." 1>&2
   fi
 fi
 
 find "$base_dir" -iname "*.pyc" -exec rm {} \;