Roll src/third_party/depot_tools/ 8762632eb..ddfead348 (2 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/8762632eb725..ddfead3483f2

$ git log 8762632eb..ddfead348 --date=short --no-merges --format='%ad %ae %s'
2017-11-15 tandrii bot_update: mooore refactor around _git_checkout.
2017-11-17 tandrii bot_update: don't crash badly if there no json outpot.

Created with:
  roll-dep src/third_party/depot_tools


The AutoRoll server is located here: https://depot-tools-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=phajdan.jr@chromium.org

Change-Id: I95f5fc922b282569e6e551a5b66923383d1d0daa
Reviewed-on: https://chromium-review.googlesource.com/777486Reviewed-by: depot-tools-roller . <depot-tools-roller@chromium.org>
Commit-Queue: depot-tools-roller . <depot-tools-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517716}

DEPS

@@ -308,7 +308,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '8762632eb7250063ebc4f4d8b3acd4ff16780abd',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + 'ddfead3483f2c1b49419de2b9f561cb32763f2b3',
 
   # DevTools node modules. Used on Linux buildbots only.
   'src/third_party/devtools-node-modules': {