Reland of depot_tools: add infra_paths recipe module for infra-specific paths (patchset #1 id:1 of https://codereview.chromium.org/1917263002/ )

Reason for revert:
re-landing because wrong order of reverts :(

Original issue's description:
> Revert of depot_tools: add infra_paths recipe module for infra-specific paths (patchset #2 id:20001 of https://codereview.chromium.org/1915463002/ )
> 
> Reason for revert:
> breaks skia bots :(
> 
> Original issue's description:
> > depot_tools: add infra_paths recipe module for infra-specific paths
> > 
> > Depends on https://codereview.chromium.org/1906323003
> > 
> > BUG=chromium:605919
> > 
> > Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=300184
> 
> TBR=iannucci@chromium.org,martiniss@chromium.org,phajdan.jr@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:605919
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=300199

TBR=iannucci@chromium.org,martiniss@chromium.org,phajdan.jr@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:605919

Review URL: https://codereview.chromium.org/1921373002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@300200 0039d316-1c4b-4281-b951-d872f2087c98