anchor.diff:    if errorlevel 1 goto :GIT_MAKE_BATCH_FILES
     goto :SYNC_GIT_HELP_FILES
   )
  -goto :GIT_INSTALL
   
   :GIT_INSTALL
   echo Installing git %GIT_VERSION% (avg 1-2 min download) ...
  -echo Detected: %OS_BITS% bits
  -if defined XP_SUFFIX         echo ... Windows XP
  -if defined GIT_PORTABLE_FLOW echo ... Portable installation flow
  -
  -:: git is not accessible; check it out and create 'proxy' files.
  +
   if exist "%GIT_DOWNLOAD_PATH%" del "%GIT_DOWNLOAD_PATH%"
   echo Fetching from %GIT_FETCH_URL%
   cscript //nologo //e:jscript "%~dp0get_file.js" %GIT_FETCH_URL% "%GIT_DOWNLOAD_PATH%"
  
positive.code: 
  :GIT_CHECK
  
  :: See if we're on XP
  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 XP_SUFFIX=-xp
  
  :: must explicitly use FIND_EXE to prevent this from grabbing e.g. gnuwin32 or
  :: msys versions.
  set FIND_EXE=%SYSTEMROOT%\System32\find.exe
  
negative.code: :: (parens) are necessary, otherwise batch puts an extra space after 32.
  reg Query "HKLM\Hardware\Description\System\CentralProcessor\0" | %FIND_EXE% /i "x86" > NUL && (set OS_BITS=32) || (set OS_BITS=64)
  
  if not exist "%WIN_TOOLS_ROOT_DIR%\.git_bleeding_edge" (
    set GIT_VERSION=2.7.4
  ) else (
    set GIT_VERSION=2.7.4
  )
  set GIT_VERSION=%GIT_VERSION%-%OS_BITS%
  
  set GIT_FETCH_URL=https://commondatastorage.googleapis.com/chrome-infra/PortableGit-%GIT_VERSION%-bit.7z.exe
  set GIT_DOWNLOAD_PATH=%ZIP_DIR%\git.7z.exe
  set GIT_BIN_DIR=git-%GIT_VERSION%_bin
  set GIT_INST_DIR=%WIN_TOOLS_ROOT_DIR%\%GIT_BIN_DIR%
  set GIT_EXE_PATH=%GIT_INST_DIR%\bin\git.exe
  
  :: 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" (
  