Only allow HTTP/0.9 support on default ports.

chrome/test/data/policy/policy_test_cases.json

 {
   "-- Template --": {
     "intro": "Top-level entries map a policy name to its test parameters, described below. The name of the top level entry should be of the form <policy name>[.suffix]. The optional suffix is used for defining multiple test cases for a single policy.",
 
     "os": ["List of operating systems that support this policy. Valid values:", "win", "linux", "mac", "chromeos", "Defaults to empty if not specified."],
     "official_only": "Whether this policy exists in official builds only. Defaults to |false| if not specified.",
     "can_be_recommended": "Whether a recommended value may be set for the policy. Defaults to |false| if not specified.",
     "test_policy": "A policy dictionary that should make the preferences affected by this policy become policy-controlled. Usually just sets the current policy. Defaults to an empty dictionary if not specified.",
     "note": "If the policy affects any preferences, the following array should be specified with one entry per such preference.",
     "pref_mappings": [
@@ skipping 137 matching lines @@
   },
 
   "DisabledSchemes": {
     "os": ["win", "linux", "mac", "chromeos"],
     "test_policy": { "DisabledSchemes": ["file"] },
     "pref_mappings": [
       { "pref": "policy.url_blacklist" }
     ]
   },
 
+  "Http09OnNonDefaultPortsEnabled": {

[pastarmovj, 2016/08/31 12:02:11]

You can as well leave the braces empty as nothing is tested here right now. If
there is a corresponding pref (I think there isn't) or some UI in the settings
that is changed when this policy is triggered it can be tested here but
otherwise leaving just 

"Http09OnNonDefaultPortsEnabled": {}

to satisfy the presubmit is good enough.

[mmenke, 2016/08/31 14:30:28]

Done (Yea, there's no pref, no UI surface area)

+    "os": ["win", "linux", "mac", "chromeos"],
+    "test_policy": { "Http09OnNonDefaultPortsEnabled": true }
+  },
+
   "JavascriptEnabled": {
     "os": ["win", "linux", "mac", "chromeos"],
     "test_policy": { "JavascriptEnabled": false },
     "pref_mappings": [
       { "pref": "profile.managed_default_content_settings.javascript",
         "indicator_selector": "[content-setting=javascript]",
         "indicator_tests": [
           { "policy": { "JavascriptEnabled": false },
             "value": "block"}
         ]
@@ skipping 2714 matching lines @@
 
   "AdditionalLaunchParameters": {
   },
 
   "SuppressChromeFrameTurndownPrompt": {
   },
 
   "SkipMetadataCheck": {
   }
 }