Split out DEPS change from 294873004 to land first.

BUG=skia:
R=mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/331913004
diff --git a/DEPS b/DEPS
index 7e9cf81..7d19f93 100644
--- a/DEPS
+++ b/DEPS
@@ -15,6 +15,7 @@
   "third_party/externals/jsoncpp-chromium" : "https://chromium.googlesource.com/chromium/src/third_party/jsoncpp.git@41239939c0c60481f34887d52c038facf05f5533",
   "third_party/externals/libwebp" : "https://chromium.googlesource.com/webm/libwebp.git@3fe91635df8734b23f3c1b9d1f0c4fa8cfaf4e39",
   # "third_party/externals/v8" : "git://github.com/v8/v8.git@d15b0f0f2099dbd72867f3df70e9aaf5b8afbd2c",
+  "third_party/externals/nanomsg": "git://github.com/nanomsg/nanomsg.git@0.4-beta",
 }
 
 deps_os = {