Revert git-1.9.0.

bootstrap/win/win_tools.bat

 @echo off
 :: 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 find if svn and python are accessible and it not,
 :: it will try to download it and 'install' it in depot_tools.
 
 :: Sadly, we can't use SETLOCAL here otherwise it ERRORLEVEL is not correctly
 :: returned.
@@ skipping 42 matching lines @@
 :PYTHON_FAIL
 echo ... Failed to checkout python automatically.
 echo Please visit http://python.org to download the latest python 2.7.x client before
 echo continuing.
 echo You can also get the "prebacked" version used at %WIN_TOOLS_ROOT_URL%/third_party/
 set ERRORLEVEL=1
 goto :END
 
 
 :GIT_CHECK
-goto :GIT_190_CHECK
+goto :GIT_1852_CHECK
 
 
 :GIT_190_CHECK
 if "%DEPOT_TOOLS_GIT_190%" == "0" goto :GIT_1852_CHECK
 set GIT_VERSION=1.9.0.chromium.1
 set GIT_BIN_DIR=git-%GIT_VERSION%_bin
 set GIT_ZIP_FILE=%GIT_BIN_DIR%.zip
 set GIT_ZIP_URL=https://commondatastorage.googleapis.com/chrome-infra/%GIT_ZIP_FILE%
 goto :GIT_COMMON
 
@@ skipping 118 matching lines @@
 goto :END
 
 
 :returncode
 set WIN_TOOLS_ROOT_URL=
 set WIN_TOOLS_ROOT_DIR=
 exit /b %ERRORLEVEL%
 
 :END
 call :returncode %ERRORLEVEL%