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/af437b4736641bc6845330b16aab3252647a6ad9 WebRTC: Add mail notification if the autoroller fails. (kjellander@chromium.org)
depot_tools:
  https://crrev.com/04b51d6de0c1eb267f2446126a682fc747620439 Reland of Relax git_footers parsing to match that of Gerrit (JGit). (tandrii@chromium.org)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I8a957a5eb90e483290b26766eddd04209f80aab1
Reviewed-on: https://skia-review.googlesource.com/16482
Reviewed-by: Recipe Roller <recipe-roller@chromium.org>
Commit-Queue: Recipe Roller <recipe-roller@chromium.org>

infra/config/recipes.cfg

@@ -14,12 +14,12 @@
   "deps": {
     "build": {
       "branch": "master",
-      "revision": "0903c31179747b6479b608eb5240eccca600084c",
+      "revision": "793b361fd43105897834674759af95ce2adb0abf",
       "url": "https://chromium.googlesource.com/chromium/tools/build.git"
     },
     "depot_tools": {
       "branch": "master",
-      "revision": "43ec62ec712c3f199f85c8abec6db77a9e5e81e1",
+      "revision": "04b51d6de0c1eb267f2446126a682fc747620439",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {