Added a ForceYouTubeRestrict policy and deprecated the old ForceYouTubeSafetyMode policy

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."],
+    "os": ["List of operating systems that support this policy. Valid values:", "win", "linux", "mac", "chromeos", "android", "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": [
       { "pref": "The affected preference's name.",
         "local_state": "Whether |pref| is registered in local state's PrefService instead of the profile's PrefService. Defaults to |false| if not specified.",
         "check_for_mandatory": "Should the preference be tested when a mandatory value is set for the policy? Defaults to |true| if not specified.",
         "check_for_recommended": "Should the preference be tested when a recommended value is set for the policy? Defaults to |true| if not specified.",
         "note": "When |can_be_recommended| is |false|, the policy is never set to a recommended value so |check_for_recommended| has no effect.",
@@ skipping 273 matching lines @@
           { "policy": { "SafeBrowsingEnabled": false } }
         ]
       }
     ]
   },
 
   "ForceSafeSearch": {
     "pref": "settings.force_safesearch",
     "test_policy": { "ForceSafeSearch": true },
     "settings_pages": [],
-    "os": ["win", "linux", "mac", "chromeos"]
+    "os": ["win", "linux", "mac", "chromeos", "android"]
   },
 
   "ForceGoogleSafeSearch": {
     "pref": "settings.force_google_safesearch",
     "test_policy": { "ForceGoogleSafeSearch": true },
     "settings_pages": [],
-    "os": ["win", "linux", "mac", "chromeos"]
+    "os": ["win", "linux", "mac", "chromeos", "android"]
   },
 
   "ForceYouTubeSafetyMode": {
     "pref": "settings.force_youtube_safety_mode",
     "test_policy": { "ForceYouTubeSafetyMode": true },
     "settings_pages": [],
-    "os": ["win", "linux", "mac", "chromeos"]
+    "os": ["win", "linux", "mac", "chromeos", "android"]
+  },
+
+  "ForceYouTubeRestrict": {
+    "pref": "settings.force_youtube_restrict",
+    "test_policy": { "ForceYouTubeRestrict": 1 },
+    "settings_pages": [],
+    "os": ["win", "linux", "mac", "chromeos", "android"]
   },
 
   "MetricsReportingEnabled": {
     "os": ["win", "mac", "linux"],
     "official_only": true,
     "can_be_recommended": true,
     "test_policy": { "MetricsReportingEnabled": false },
     "indicator_selector": "#metrics-reporting-disabled-icon",
     "pref_mappings": [
       { "pref": "user_experience_metrics.reporting_enabled",
@@ skipping 2571 matching lines @@
 
   "AdditionalLaunchParameters": {
   },
 
   "SuppressChromeFrameTurndownPrompt": {
   },
 
   "SkipMetadataCheck": {
   }
 }