Add version information to the policy templates

tools/grit/grit/format/policy_templates/writers/plist_strings_writer_unittest.py

Index: tools/grit/grit/format/policy_templates/writers/plist_strings_writer_unittest.py
diff --git a/tools/grit/grit/format/policy_templates/writers/plist_strings_writer_unittest.py b/tools/grit/grit/format/policy_templates/writers/plist_strings_writer_unittest.py
index 6df8f84cc41a9a423d9371b556ec65312b51cdfc..1fc19c8a144852a540557a882fc020ea9bf0932d 100644
--- a/tools/grit/grit/format/policy_templates/writers/plist_strings_writer_unittest.py
+++ b/tools/grit/grit/format/policy_templates/writers/plist_strings_writer_unittest.py
@@ -57,7 +57,7 @@ class PListStringsWriterUnittest(writer_unittest_common.WriterUnittestCommon):
             'policies': [{
               'name': 'MainPolicy',
               'type': 'main',
-              'annotations': {'platforms': ['mac']},
+              'supported_on': ['chrome.mac:8-'],
             }],
           },
         ],
@@ -96,7 +96,7 @@ class PListStringsWriterUnittest(writer_unittest_common.WriterUnittestCommon):
             'policies': [{
               'name': 'StringPolicy',
               'type': 'string',
-              'annotations': {'platforms': ['mac']},
+              'supported_on': ['chrome.mac:8-'],
             }],
           },
         ],
@@ -141,7 +141,7 @@ With a newline.</message>
                 {'name': 'ProxyServerDisabled', 'value': '0'},
                 {'name': 'ProxyServerAutoDetect', 'value': '1'},
               ],
-              'annotations': {'platforms': ['mac']},
+              'supported_on': ['chrome.mac:8-'],
             }],
           },
         ],
@@ -184,7 +184,7 @@ With a newline.</message>
             'policies': [{
               'name': 'NonMacPolicy',
               'type': 'string',
-              'annotations': {'platforms': ['win', 'linux']},
+              'supported_on': ['chrome_os:8-'],
             }],
           },
         ],