Add Mac output for policy template generator

tools/grit/grit/test_suite_all.py

Index: tools/grit/grit/test_suite_all.py
diff --git a/tools/grit/grit/test_suite_all.py b/tools/grit/grit/test_suite_all.py
index 98b9d0d7447330862da742ea57e0e10046470802..0a427a2f974bd96450d5ceeb0cbd1d5a392dfd43 100644
--- a/tools/grit/grit/test_suite_all.py
+++ b/tools/grit/grit/test_suite_all.py
@@ -47,6 +47,9 @@ class TestSuiteAll(unittest.TestSuite):
     from grit.node.custom import filename_unittest
     import grit.format.js_map_format_unittest
     from grit.format.policy_templates import policy_template_generator_unittest
+    from grit.format.policy_templates.writers import plist_writer_unittest
+    from grit.format.policy_templates.writers \
+        import plist_strings_writer_unittest
 
     test_classes = [
       base_unittest.NodeUnittest,
@@ -77,6 +80,8 @@ class TestSuiteAll(unittest.TestSuite):
       filename_unittest.WindowsFilenameUnittest,
       grit.format.js_map_format_unittest.JsMapFormatUnittest,
       policy_template_generator_unittest.PolicyTemplateGeneratorUnittest,
+      plist_writer_unittest.PListWriterUnittest,
+      plist_strings_writer_unittest.PListStringsWriterUnittest,
       # add test classes here...
     ]