Set default Windows git to 1.9.5-chromium.6 build.

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 You should get the "prebaked" version at %WIN_TOOLS_ROOT_URL%/third_party/
 set ERRORLEVEL=1
 goto :END
 
 :GIT_CHECK
 if "%DEPOT_TOOLS_GIT_BLEEDING%" == "1" (
   set GIT_VERSION=1.9.5.chromium.6
 ) else (
-  set GIT_VERSION=1.9.5.chromium.5
+  set GIT_VERSION=1.9.5.chromium.6
 )
 for /f "tokens=2 delims=[]" %%i in ('ver') do set VERSTR=%%i
 for /f "tokens=2,3 delims=. " %%i in ("%VERSTR%") do (set VERMAJOR=%%i & set VERMINOR=%%j)
 if %VERMAJOR% lss 5 set GIT_VERSION=%GIT_VERSION%-xp
 if %VERMAJOR% equ 5 if %VERMINOR% lss 2 set GIT_VERSION=%GIT_VERSION%-xp
 
 :: Clean up any release which doesn't match the one we want.
 for /d %%i in (%WIN_TOOLS_ROOT_DIR%\git-*_bin) do (
   if not %%i == %WIN_TOOLS_ROOT_DIR%\git-%GIT_VERSION%_bin (
     rmdir /s /q "%%i"
@@ skipping 90 matching lines @@
 goto :END
 
 
 :returncode
 set WIN_TOOLS_ROOT_URL=
 set WIN_TOOLS_ROOT_DIR=
 exit /b %ERRORLEVEL%
 
 :END
 call :returncode %ERRORLEVEL%