Roll recipe dependencies (trivial).

This is an automated CL created by the recipe roller. This CL rolls recipe
changes from upstream projects (e.g. depot_tools) into downstream projects
(e.g. tools/build).


More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug.
build:
  https://crrev.com/a5879798e46344f83022b4da1ba28911e4d4c9d9 V8: Bump shards on slowest bots (machenbach@chromium.org)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: Ibd08ca994c4a86a06ff103c3cc1af59284d7be13
Reviewed-on: https://skia-review.googlesource.com/16861
Reviewed-by: Recipe Roller <recipe-roller@chromium.org>
Commit-Queue: Recipe Roller <recipe-roller@chromium.org>

infra/config/recipes.cfg

@@ -14,7 +14,7 @@
   "deps": {
     "build": {
       "branch": "master",
-      "revision": "50d92aaab89843dfe7cf08728af52477faf87764",
+      "revision": "a5879798e46344f83022b4da1ba28911e4d4c9d9",
       "url": "https://chromium.googlesource.com/chromium/tools/build.git"
     },
     "depot_tools": {