Delete git-lkgr - it's not used any more

BUG=

Review-Url: https://codereview.chromium.org/2020173002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@300676 0039d316-1c4b-4281-b951-d872f2087c98

git-lkgr

-#!/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.
-
-branch_name=""
-checkout_branch=no
-create_branch=no
-quiet=no
-svn_lkgr=
-
-while [ $# -gt 0 ]; do
-  case "$1" in
-    --checkout|--force-branch)
-      checkout_branch=yes
-      create_branch=yes
-      ;;
-    --closest)
-      use_closest=yes
-      ;;
-    --create)
-      create_branch=yes
-      ;;
-    -n|--name)
-      branch_name=$2
-      create_branch=yes
-      shift
-      ;;
-    -q|--quiet)
-      quiet=yes
-      ;;
-    -r|--revision)
-      svn_lkgr="$2"
-      shift
-      ;;
-    *)
-      echo "Unknown option: $1"
-      echo "Usage:"
-      echo "  --checkout         Create a branch and check it out."
-      echo "  --create           Create a branch."
-      echo "  --closest          Use closest git commit to the target svn revision."
-      echo "                       Otherwise --checkout may be required to create"
-      echo "                       a git commit for a specific svn revision."
-      echo "  -n, --name <name>  Specify the name of branch to create or reset."
-      echo "                       This will force the branch using 'git branch -f '."
-      echo "  -q, --quiet        Quiet."
-      echo "  -r, --revision <r> Svn revision number use instead of server provided lkgr."
-      exit 1
-      ;;
-  esac
-  shift
-done
-
-if [ -z "$svn_lkgr" ]; then
-  svn_lkgr=`curl -s http://chromium-status.appspot.com/lkgr`
-  if [ $? != 0 -o -z "$svn_lkgr" ]; then
-    echo 'Could not get svn lkgr from chromium-status.appspot.com/lkgr'
-    exit 1
-  fi
-fi
-
-if [ "${svn_lkgr:0:1}" = "r" ]; then
-  svn_lkgr="${svn_lkgr:1}"
-fi
-
-# Run a trivial git-svn command to force it to update the revision cache
-# (which causes spew that might otherwise confuse the next command).
-git svn info > /dev/null
-if [ $? != 0 ]; then
-  cat <<EOF 1>&2
-Could not run a trivial git-svn command.  You probably need to set up your
-working directory for git-svn, by following these instructions:
-
-http://code.google.com/p/chromium/wiki/UsingNewGit#Initial_checkout
-EOF
-  exit 1
-fi
-
-git_lkgr=`git svn find-rev r${svn_lkgr}`
-if [ $? != 0 -o -z "$git_lkgr" ]; then
-  cat <<EOF 1>&2
-Could not map svn revision ${svn_lkgr} to a git commit.
-You may need to 'git fetch' and try again.
-EOF
-  exit 1
-fi
-
-set -o pipefail
-closest_commit=`git rev-list --ancestry-path \
-    --grep='SVN changes up to revision [0-9]*' \
-    ${git_lkgr}..refs/remotes/origin/master | tail -1`
-if [ $? != 0 -o -z "$closest_commit" ]; then
-  closest_commit=
-  closest_svn_commit=
-else
-  closest_svn_commit=`git rev-list -n 1 ${closest_commit}^1`
-  if [ $? != 0 -o -z "$closest_svn_commit" ]; then
-    cat <<EOF 1>&2
-  I am thoroughly confused.  Please file a bug report at http://new.crbug.com.
-EOF
-    exit 1
-  fi
-  closest_svn=`git svn find-rev ${closest_svn_commit}`
-fi
-
-if [ "${use_closest}" = "yes" ]; then
-  svn_lkgr="${closest_svn}"
-  git_lkgr="${closest_svn_commit}"
-fi
-
-# Determine lkgr_branch:
-if [ "${branch_name}" != "" ]; then
-  # Use the provided name for the branch.
-  lkgr_branch="${branch_name}"
-
-  # If the branch already exists, force the update to it.
-  git rev-parse --verify -q "${branch_name}" >/dev/null
-  if [ $? -eq 0 ]; then
-    old_branch_value=`git rev-parse "${branch_name}"`
-    echo "Will update branch ${lkgr_branch}, it previously was at ${old_branch_value}."
-    force_branch="--force"
-  fi
-else
-  # Pick a name for the new branch.  Use `git rev-parse` to make sure the branch
-  # doesn't already exist; if it does, iterate an integer suffix to uniquify it.
-  lkgr_branch="lkgr_r${svn_lkgr}"
-  digit=1
-  git rev-parse --verify -q "${lkgr_branch}" >/dev/null
-  while [ $? -eq 0 ]; do
-    lkgr_branch="lkgr_r${svn_lkgr}_${digit}"
-    digit=`expr $digit + 1`
-    git rev-parse --verify -q "${lkgr_branch}" >/dev/null
-  done
-fi
-
-if [ "${closest_svn_commit}" = "${git_lkgr}" ]; then
-  echo "${closest_commit}"
-  if [ "$create_branch" = "yes" ]; then
-    echo "Creating branch ${lkgr_branch}"
-    git branch ${force_branch} "${lkgr_branch}" "${closest_commit}" || exit 1
-  fi
-  if [ "$checkout_branch" = "yes" ]; then
-    git checkout "${lkgr_branch}"
-  fi
-  exit 0
-elif [ "${quiet}" = "yes" ]; then
-  exit 1
-elif [ "${checkout_branch}" = "no" ]; then
-  echo "There is no master commit which corresponds exactly to svn revision ${svn_lkgr}."
-  echo "Call 'git lkgr --checkout' to create a branch with a commit to match ${svn_lkgr}."
-  if [ -n "$closest_commit" ]; then
-    echo "The closest commit is r${closest_svn}, ${closest_commit}."
-    echo "Use the --closest option to use the closest instead of the target revision."
-  fi
-  exit 0
-fi
-
-current_head=`git branch | grep '^\*' | cut -c3-`
-if [ "${current_head}" = "(no branch)" ]; then
-  current_head=`git rev-parse HEAD`
-fi
-
-git checkout --detach "${git_lkgr}" &&
-python tools/deps2git/deps2git.py -d DEPS -o .DEPS.git -w .. &&
-git add .DEPS.git &&
-python tools/deps2git/deps2submodules.py .DEPS.git &&
-git commit -m "SVN changes up to revision $svn_lkgr" &&
-git branch ${force_branch} "${lkgr_branch}" HEAD
-
-if [ $? != 0 ]; then
-  cat <<EOF
-
---------------------------------------------------------------------------------
-Something went wrong!  Restoring your previous state by checking out
-$current_head
-
-Please file a bug report at http://new.crbug.com.
---------------------------------------------------------------------------------
-
-EOF
-  git checkout --force $current_head
-  exit 1
-fi
-
-git checkout "${lkgr_branch}"
-
-cat <<EOF
-
---------------------------------------------------------------------------------
-The new branch "$lkgr_branch" was branched from this commit:
-
-$git_lkgr
-
-... which maps to the svn commit r${svn_lkgr}.  The new branch
-has one additional commit, to bring .DEPS.git, .gitmodules, and the
-invisible git submodule files up to date with DEPS.
-
-To create a working branch, do this:
-
-\$ git branch --track my_new_branch $lkgr_branch
-
-'git-cl upload' will do the right thing, i.e., it will cherry-pick all
-your changes from my_new_branch, but *not* the .DEPS.git+.gitmodules+submodules
-commit on $lkgr_branch.
---------------------------------------------------------------------------------
-
-EOF