how to check out chromium

[fengtianba]

cd /path/to/chromium
gclient sync --revision src@chromium_revision --jobs 16


the website said this ,but I do not know what is chromium_revision.





# The Chromium Embedded Framework (CEF) project is built on top of the Chromium
# project source tree. Chromium should be updated to the URL and revision listed
# below before building CEF. Chromium compatibility information for older CEF
# revisions is available by viewing this file's change history.
#
# To configure a specific Chromium URL:
# gclient config chromium_url
#
# To update to a specific Chromium revision:
# gclient sync --revision src@chromium_revision --jobs 8 --force
#
# This file is integrated with the CEF Automation Tool. See the
# tools/automate/automate.README.txt file for more information.
#
# For general gclient usage information visit:
# http://dev.chromium.org/developers/how-tos/get-the-code

{
'release_url': 'http://src.chromium.org/svn/releases/33.0.1750.170',
'chromium_checkout': 'refs/tags/33.0.1750.170',
'chromium_nohooks': 'true',
}


this is the CHROMIUM_BUILD_COMPATIBILITY.txt file in the CEF top-level directory,

I ran like this :
gclient sync --revision src@33.0.1750.170 --jobs 16 but does not work,
so I run like this gclient sync --revision src@33 --jobs 16,it can start to download?Am I right?