This repository contains hashes of build tools used by Chromium and related projects. The actual binaries are pulled from Google Storage, normally as part of a gclient hook. The repository is separate so that the shared build tools can be shared between the various Chromium-related projects without each one needing to maintain their own versionining of each binary. ________________________________________ UPDATING AND ROLLING BUILDTOOLS MANUALLY When you update buildtools, you should roll the new version into the Chromium repository right away. Otherwise, the next person who makes a change will end up rolling (and testing) your change. If there are any unresolved problems with your change, the next person will be blocked. - From the buildtools directory, make a branch, edit and upload normally. - Get your change reviewed and landed. There are no trybots so landing will be very fast. - Get the hash for the commit that commit-bot made. Make a new branch in the Chromium repository and paste the hash into the line in //DEPS labeled "buildtools_revision". - You can TBR changes to the DEPS file since the git hashes can't be reviewed in any practical way. Submit that patch to the commit queue. - If this roll identifies a problem with your patch, fix it promptly. If you are unable to fix it promptly, it's best to revert your buildtools patch to avoid blocking other people that want to make changes. ________________________ ADDING BINARIES MANUALLY One uploads new versions of the tools using the 'gsutil' binary from the Google Storage SDK: https://developers.google.com/storage/docs/gsutil There is a checked-in version of gsutil as part of depot_tools. To initialize gsutil's credentials: python ~/depot_tools/third_party/gsutil/gsutil config That will give a URL which you should log into with your web browser. Copy the code back to the command line util. Ignore the project ID (it's OK to just leave blank when prompted).