Add a chromium version to policy template files.

grit/format/policy_templates/writers/ios_plist_writer_unittest.py

Index: grit/format/policy_templates/writers/ios_plist_writer_unittest.py
===================================================================
--- grit/format/policy_templates/writers/ios_plist_writer_unittest.py	(revision 177)
+++ grit/format/policy_templates/writers/ios_plist_writer_unittest.py	(working copy)
@@ -55,11 +55,17 @@
                                         expected_output,
                                         parse,
                                         decode_and_parse):
+
+
+    _defines = { '_chromium': '1',
+                 'mac_bundle_id': 'com.example.Test',
+                 'version': '39.0.0.0' }
+
     # Generate the grit output for |templates|.
     output = self.GetOutput(
         self.PrepareTest(templates),
         'fr',
-        { '_chromium': '1', 'mac_bundle_id': 'com.example.Test' },
+        _defines,
         'ios_plist',
         'en')
 
@@ -124,6 +130,17 @@
     expected = {}
     self._VerifyGeneratedOutput(templates, expected)
 
+  def testEmptyVersion(self):
+    templates = '''
+    {
+      'policy_definitions': [],
+      'placeholders': [],
+      'messages': {},
+    }
+    '''
+    expected = {}
+    self._VerifyGeneratedOutput(templates, expected)
+
   def testBoolean(self):
     templates = self._MakeTemplate('BooleanPolicy', 'main', 'True')
     expected = {