This reverts commit d6186f99.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> depot_tools: Run Python scripts using vpython (Part 1)
> 
> Tbr: iannucci@chromium.org
> Bug: 984182
> Change-Id: If36722e190d305f89d63dce91d0a600ddc34ebe3
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1748589
> Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
> Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

TBR=iannucci@chromium.org,ehmaldonado@chromium.org

Change-Id: I7686985852608d0703bcbbab137df1ce82b29723
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 984182
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1749853Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

Tbr: iannucci@chromium.org
Bug: 984182
Change-Id: If36722e190d305f89d63dce91d0a600ddc34ebe3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1748589Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

TBR=iannucci@chromium.org

Change-Id: I07668787e4f26bc4809ea3c3a5331a259655d2da
Reviewed-on: https://chromium-review.googlesource.com/527295Reviewed-by: Aaron Gable <agable@chromium.org>
Commit-Queue: Aaron Gable <agable@chromium.org>

Bug:

Change-Id: Ife7f4049062bc951e58d5c322b1fc7e39338fe79
Reviewed-on: https://chromium-review.googlesource.com/463246
Commit-Queue: anatoly techtonik <techtonik@gmail.com>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>

R=iannucci@chromium.org
BUG=376099

Review-Url: https://codereview.chromium.org/2075603002

Handle KeyboardInterrupt gracefully rather the printing a
backtrace. Most users of these tools don't expect a
backtrace when then hit Ctrl-C.

Also, fix a few other inconsistencies found in the python
startup code of these different scripts:
- always call main function 'main' (rather than 'Main')
- always return 0 from main function
- if main takes args never include argv[0]

Review URL: https://codereview.chromium.org/955993006

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@294250 0039d316-1c4b-4281-b951-d872f2087c98

This should let the base marker transparently work with plain-old-git tools
which was the idea in the first place. Specifically `git branch -u` without a
corresponding rebase.

R=agable@chromium.org
BUG=373977

Review URL: https://codereview.chromium.org/288323002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@271112 0039d316-1c4b-4281-b951-d872f2087c98

R=agable@chromium.org
BUG=

Review URL: https://codereview.chromium.org/288123003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@270572 0039d316-1c4b-4281-b951-d872f2087c98

Previously BRIGHT+WHITE would wrap around to the asterisk on the next line.

R=agable@chromium.org
BUG=

Review URL: https://codereview.chromium.org/224933003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@261783 0039d316-1c4b-4281-b951-d872f2087c98

This is in-place of --remotes. With repos like src.git that have alternate roots
this causes git-map to be faster (since it's not trying to display
origin/master).

R=agable@chromium.org
BUG=

Review URL: https://codereview.chromium.org/212183003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@259646 0039d316-1c4b-4281-b951-d872f2087c98

git-rebase-update - ensure all branches are up to date
git-new-branch - create branches
git-rename-branch - rename a branch while preserving parentage relationships
git-reparent-branch - change the parent of a branch, including rebasing it correctly onto that new parent.
git-squash-branch - collapse a branch into a single commit
git-upstream-diff - show the diff between the current branch and it's upstream branch
git-mark-merge-base - explicitly set what you want the above tools to consider the merge-base for the current branch.

R=agable@chromium.org, hinoka@chromium.org, stip@chromium.org, szager@chromium.org
BUG=261738

Review URL: https://codereview.chromium.org/184253003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@259520 0039d316-1c4b-4281-b951-d872f2087c98

Also fix missing copyright notices.

R=agable@chromium.org
BUG=261738

Review URL: https://codereview.chromium.org/196433003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@256777 0039d316-1c4b-4281-b951-d872f2087c98

git-map: Show your local repo's history in a pseudo-graphical format from the command line.

git-map-branches: Show the topology of all of your branches, and their upstream relationships.

git-nav-upstream: Navigate (checkout) to the upstream branch of the current branch.

git-nav-downstream: Navigate (checkout) to a downstream branch of the current branch. If there's more than one downstream branch, then present a menu to select which one you want.

R=agable@chromium.org, hinoka@chromium.org, stip@chromium.org, szager@chromium.org
BUG=

Review URL: https://codereview.chromium.org/184113002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@256384 0039d316-1c4b-4281-b951-d872f2087c98