Add policy controlled permission block list for extensions

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 686 matching lines @@
     "pref_mappings": [
       { "pref": "extensions.allowed_types" }
     ]
   },
 
   "ExtensionSettings": {
     "os": ["win", "linux", "mac", "chromeos"],
     "test_policy": {
       "ExtensionSettings": {
         "abcdefghijklmnopabcdefghijklmnop" : {
-          "installation_mode": "allowed"
+          "installation_mode": "allowed",
+          "blocked_permissions": ["history"]
         },
         "bcdefghijklmnopabcdefghijklmnopa" : {
           "installation_mode": "force_installed",
-          "update_url": "http://example.com/update_url"
+          "update_url": "http://example.com/update_url",
+          "allowed_permissions": ["downloads"]
         },
         "*": {
           "installation_mode": "blocked",
+          "blocked_permissions": ["downloads", "bookmarks"],
           "install_sources": ["http://company-intranet/chromeapps"],
           "allowed_types": ["hosted_app"]
         }
       }
     },
     "pref_mappings": [
       { "pref": "extensions.management" }
     ]
   },
 
@@ skipping 1704 matching lines @@
 
   "AdditionalLaunchParameters": {
   },
 
   "SuppressChromeFrameTurndownPrompt": {
   },
 
   "SkipMetadataCheck": {
   }
 }