Don't enforce allowed_hosts for custom_deps.

gclient.py

Index: gclient.py
diff --git a/gclient.py b/gclient.py
index 86d45131786521073529607216f830503918ea38..f6db225c11c0d94e834580728faf3fad74011ed1 100755
--- a/gclient.py
+++ b/gclient.py
@@ -782,6 +782,9 @@ class Dependency(gclient_utils.WorkItem, DependencySettings):
       return []
     bad_deps = []
     for dep in self._dependencies:
+      # Don't enforce this for custom_deps.
+      if dep.name in self._custom_deps:
+        continue
       if isinstance(dep.url, basestring):
         parsed_url = urlparse.urlparse(dep.url)
         if parsed_url.netloc and parsed_url.netloc not in self._allowed_hosts: