Include 'external' policies in grit output (admx, adm, doc etc.)

components/policy/tools/template_writers/writers/admx_writer.py

Index: components/policy/tools/template_writers/writers/admx_writer.py
diff --git a/components/policy/tools/template_writers/writers/admx_writer.py b/components/policy/tools/template_writers/writers/admx_writer.py
index 7a487c0893033408e815d3fec90f91c78fb0e4c6..88607bae2aced5bc57bde27846375d015cf5d693 100755
--- a/components/policy/tools/template_writers/writers/admx_writer.py
+++ b/components/policy/tools/template_writers/writers/admx_writer.py
@@ -126,7 +126,7 @@ class ADMXWriter(xml_formatted_writer.XMLFormattedWriter):
     '''Generates the ADMX "categories" element and adds it to the categories
     main node. The "categories" element defines the category for the policies
     defined in this ADMX document. Here is an example of an ADMX "categories"
-    element on Windows:
+    element:
 
     <categories>
       <category displayName="$(string.googlechrome)" name="googlechrome">
@@ -271,9 +271,6 @@ class ADMXWriter(xml_formatted_writer.XMLFormattedWriter):
     policies_elem = self._active_policies_elem
     policy_type = policy['type']
     policy_name = policy['name']
-    if policy_type == 'external':
-      # This type can only be set through cloud policy.
-      return
 
     attributes = {
       'name': name,
@@ -294,8 +291,9 @@ class ADMXWriter(xml_formatted_writer.XMLFormattedWriter):
     if policy_type == 'main':
       self.AddAttribute(policy_elem, 'valueName', policy_name)
       self._AddMainPolicy(policy_elem)
-    elif policy_type in ('string', 'dict'):
-      # 'dict' policies are configured as JSON-encoded strings on Windows.
+    elif policy_type in ('string', 'dict', 'external'):
+      # 'dict' and 'external' policies are configured as JSON-encoded strings on
+      # Windows.
       parent = self._GetElements(policy_elem)
       self._AddStringPolicy(parent, policy_name)
     elif policy_type == 'int':