Revert 195273 "Switching to gyp revision 1617."

It looks like some of the changes in r1614 - r1617 broke some of the
chromium win builders, so I'm rolling back to r1611.

TBR=cmp@chromium.org, scottmg@chromium.org, bradnelson@chromium.org
BUG=233985

Review URL: https://codereview.chromium.org/13878025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@195424 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -117,7 +117,7 @@ deps = {
     (Var("googlecode_url") % "grit-i18n") + "/trunk@115",
 
   "src/tools/gyp":
-    (Var("googlecode_url") % "gyp") + "/trunk@1617",
+    (Var("googlecode_url") % "gyp") + "/trunk@1611",
 
   "src/tools/swarm_client":
     "/trunk/tools/swarm_client@" + Var("swarm_revision"),