as part of the Chromium checkout.

This follows the approach used by gn.

Changes include:
 - in-the-PATH clang-format trampoline scripts
 - clang_format.py, which finds clang-format binaries inside of Chrome
 - Hook 'git cl format' to the new binaries and scripts
 - Rearrange some code, for reuse between clang_format.py and gn.py

BUG=240309
TEST=presubmits (one failure on mac, but it fails on a clean checkout too)

Review URL: https://codereview.chromium.org/134313007

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@245074 0039d316-1c4b-4281-b951-d872f2087c98

R=maruel@chromium.org

Review URL: https://codereview.chromium.org/69693002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@234321 0039d316-1c4b-4281-b951-d872f2087c98

This automatically searches the path for a source root (or takes one from the
command line), and then executes the current platform's GN binary inside that
source tree.

This will allow the user to have a "gn" command on their path, and allow our
scripts to run GN without having to bake-in the logic for finding the correct
platform's GN binary.

Review URL: https://codereview.chromium.org/66013002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@233983 0039d316-1c4b-4281-b951-d872f2087c98

Since we clobber the .pyc, it's not useful to generate them in the first place.

R=dpranke@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/8060026

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@103066 0039d316-1c4b-4281-b951-d872f2087c98

Looks like we had forgot gcl.

R=dpranke@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/6838028

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@81654 0039d316-1c4b-4281-b951-d872f2087c98

on system that don't hard code bash's path.

For example, BSD's bash lives in /usr/local/bin on freebsd & openbsd.

Patch contributed by Sevan Janiyan (venture37 at gmail)

TEST=didn't break ubuntu users
BUG=none

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@66124 0039d316-1c4b-4281-b951-d872f2087c98

BUG=13668
TEST=none
Review URL: http://codereview.chromium.org/203075

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@26262 0039d316-1c4b-4281-b951-d872f2087c98

Also fixes bug where gclient fails because options isn't defined.


git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@19498 0039d316-1c4b-4281-b951-d872f2087c98

Ah cygwin...

Patch contributed by cmp@google.com

TBR=nsylvain
TEST=none
BUG=none

Review URL: http://codereview.chromium.org/125249

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@18613 0039d316-1c4b-4281-b951-d872f2087c98

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/118451

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@17974 0039d316-1c4b-4281-b951-d872f2087c98

Review URL: http://codereview.chromium.org/113205

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@15757 0039d316-1c4b-4281-b951-d872f2087c98

Review URL: http://codereview.chromium.org/92087

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@14349 0039d316-1c4b-4281-b951-d872f2087c98