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

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

Index: components/policy/tools/template_writers/writers/admx_writer_unittest.py
diff --git a/components/policy/tools/template_writers/writers/admx_writer_unittest.py b/components/policy/tools/template_writers/writers/admx_writer_unittest.py
index 8d25cac927da9a07125134e2d82a92b4ab20829c..7cb09ee2ba251d2c70d725ed6570d8fe6b7b0df9 100755
--- a/components/policy/tools/template_writers/writers/admx_writer_unittest.py
+++ b/components/policy/tools/template_writers/writers/admx_writer_unittest.py
@@ -547,6 +547,31 @@ class AdmxWriterUnittest(xml_writer_base_unittest.XmlWriterBaseTest):
         '</policy>')
     self.AssertXMLEquals(output, expected_output)
 
+  def testExternalPolicy(self):
+    external_policy = {
+      'name': 'SampleExternalPolicy',
+      'type': 'external',
+    }
+    self._initWriterForPolicy(self.writer, external_policy)
+
+    self.writer.WritePolicy(external_policy)
+    output = self.GetXMLOfChildren(self._GetPoliciesElement(self.writer._doc))
+    expected_output = (
+        '<policy class="' + self.writer.GetClass(external_policy) + '"'
+        ' displayName="$(string.SampleExternalPolicy)"'
+        ' explainText="$(string.SampleExternalPolicy_Explain)"'
+        ' key="Software\\Policies\\' + self._GetKey() + '"'
+        ' name="SampleExternalPolicy"'
+        ' presentation="$(presentation.SampleExternalPolicy)">\n'
+        '  <parentCategory ref="PolicyGroup"/>\n'
+        '  <supportedOn ref="SUPPORTED_TESTOS"/>\n'
+        '  <elements>\n'
+        '    <text id="SampleExternalPolicy" maxLength="1000000"'
+            ' valueName="SampleExternalPolicy"/>\n'
+        '  </elements>\n'
+        '</policy>')
+    self.AssertXMLEquals(output, expected_output)
+
   def testPlatform(self):
     # Test that the writer correctly chooses policies of platform Windows.
     self.assertTrue(self.writer.IsPolicySupported({