Roll src/third_party/depot_tools/ 4e9b50ab8..0115c356f (2 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/4e9b50ab86b9..0115c356f675

$ git log 4e9b50ab8..0115c356f --date=short --no-merges --format='%ad %ae %s'
2018-05-24 justincohen Roll mac_toolchain to 478dc9dbb
2018-05-23 agable Remove old git-cherry-pick-upload documentation

Created with:
  roll-dep src/third_party/depot_tools
BUG=chromium:841910,chromium:770408


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=agable@chromium.org

Change-Id: I7498707ef960c6bee4e121bcae531e6a0c1022d4
Reviewed-on: https://chromium-review.googlesource.com/1072046
Commit-Queue: depot-tools-chromium-autoroll <depot-tools-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: depot-tools-chromium-autoroll <depot-tools-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#561601}

DEPS

@@ -523,7 +523,7 @@ deps = {
   },
 
   'src/third_party/depot_tools':
-    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '4e9b50ab86b9b9f8ebf0b9ba6bd4954217ebeff9',
+    Var('chromium_git') + '/chromium/tools/depot_tools.git' + '@' + '0115c356f67563d749974293d81b3adeb00b1086',
 
   'src/third_party/devtools-node-modules':
     Var('chromium_git') + '/external/github.com/ChromeDevTools/devtools-node-modules' + '@' + Var('devtools_node_modules_revision'),