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
(or complain)

depot_tools:
  https://crrev.com/7929675b19082a057ceb9d1daa87565b6793add5 Add cipd recipe module to depot_tools (phajdan.jr@chromium.org)

R=phajdan.jr@chromium.org
TBR=martiniss@chromium.org,phajdan.jr@chromium.org
BUG=629679,635421

Recipe-Tryjob-Bypass-Reason: Autoroller
Review-Url: https://codereview.chromium.org/2240043003
diff --git a/infra/config/recipes.cfg b/infra/config/recipes.cfg
index 15f6a0c..2365067 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -5,7 +5,7 @@
   project_id: "depot_tools"
   url: "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
   branch: "master"
-  revision: "9e198a84a930530032d87318b8c33b62b8b3833f"
+  revision: "7929675b19082a057ceb9d1daa87565b6793add5"
 }
 deps {
   project_id: "recipe_engine"