For git checkouts of depot_tools, update remote.origin.url to the git-on-borg mirror.

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.
   exit
 fi
 
 base_dir=$(dirname "$0")
 if [ -L "$base_dir" ]
 then
     base_dir=`cd "$base_dir" && pwd -P`
 fi
 
 # Test if this script is running under a MSys install.  If it is, we will
 # hardcode the paths to SVN and Git where possible.
 OUTPUT="$(uname | grep 'MINGW')"
 MINGW=$?
 
+CANONICAL_GIT_URL="https://chromium.googlesource.com/chromium/tools/depot_tools"

[M-A Ruel, 2013/01/07 16:19:18]

Wouldn't it be better to use ".../depot_tools.git" for consistency.

I kinda dislike that we support different urls and would highly prefer to
support *only one exact* url. It's a pain to manage afterward, like in the CQ,
because there's a lot of possible permutations. :(

+
 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"
 fi
 
@@ skipping 28 matching lines @@
     echo "git version is ${GITV}, please update to a version later than 1.6"
     exit 1
   fi
 }
 
 function is_git_clone_repo {
   "$GIT" config remote.origin.fetch > /dev/null
 }
 
 function update_git_repo {
+  remote_url=$("$GIT" config --get remote.origin.url)
+  if [ -n "$remote_url" -a "$remote_url" != "$CANONICAL_GIT_URL" ]; then
+    echo "Your copy of depot_tools is configured to fetch from an obsolete URL:"
+    echo
+    echo "  $remote_url"
+    echo
+    read -t 60 -p "OK to update it to $CANONICAL_GIT_URL ? [Y/n] " -n 1
+    echo
+    if [ $? -ne "0" ]; then
+      echo "Timeout; not updating remote URL."
+    elif [ -z "$REPLY" -o "$REPLY" = "Y" -o "$REPLY" = "y" ]; then
+      "$GIT" config remote.origin.url "$CANONICAL_GIT_URL"
+      echo "Remote URL updated."
+    fi
+  fi
+
   if is_git_clone_repo; then
     git fetch -q origin &> /dev/null
     local REBASE_TXT STATUS
     REBASE_TXT=$(git rebase -q origin/master 2>&1)
     STATUS=$?
     if [[ $STATUS -ne 0 ]]; then
       echo "depot_tools update failed. Conflict in $base_dir" >&2
       echo "$REBASE_TXT" >&2
       git rebase --abort 2> /dev/null
     fi
@@ skipping 29 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 {} \;