• primiano@chromium.org's avatar
    Reland "Make gclient ready for the Blink (DEPS to main project)" · 1c127389
    primiano@chromium.org authored
    Reland crrev.com/743083002, which was reverted in crrev.com/796053002
    due to some test flakiness, probably related with an old version of Git on
    the bots. Relanding now that the infra has been updated to Trusty (plus
    adding some de-flake precautions).
    
    Original CL Description:
    Make gclient ready for the Blink (DEPS to main project) transition
    
    This CL makes gclient understand correctly whether a git project is
    being moved from DEPS to an upper project and vice-versa.
    The driving use case for this is the upcoming Blink merge, where
    third_party/Webkit will be removed from DEPS (and .gitignore) and will
    become part of the main project.
    
    At present state, gclient leaves the .git folder around when a project
    is removed from DEPS, and that causes many problems.
    
    Furthermore this CL solves the performance problem of bisecting across
    the merge point. The subproject's (Blink) .git/ folder is moved to a
    backup location (in the main checkout root) and is restored when moving
    backwards, avoiding a re-fetch when bisecting across the merge point.
    
    BUG=431469
    
    Review URL: https://codereview.chromium.org/910913003
    
    git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@294082 0039d316-1c4b-4281-b951-d872f2087c98
    1c127389
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