Mapping third_party/makeself for the GYP build as well.

Review URL: http://codereview.chromium.org/342009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30353 0039d316-1c4b-4281-b951-d872f2087c98

o3d/DEPS_gyp

@@ -34,6 +34,9 @@ deps = {
   "third_party/libevent":
     "http://o3d.googlecode.com/svn/trunk/googleclient/third_party/libevent@" + Var("o3d_code_rev"),
 
+  "third_party/makeself":
+    "http://o3d.googlecode.com/svn/trunk/googleclient/third_party/makeself@" + Var("o3d_code_rev"),
+
   "third_party/pdiff":
     "http://o3d.googlecode.com/svn/trunk/googleclient/third_party/pdiff@" + Var("o3d_code_rev"),