[Policy Experimental] Add policies to allow Cookies and Pop-ups exceptions.

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 1135 matching lines @@
           },
           { "policy": { "VideoCaptureAllowed": true,
                         "DefaultMediaStreamSetting": 3 },
             "value": "ask"
           }
         ]
       }
     ]
   },
 
+  "UserCookiesExceptionsUsage": {
+    "os": ["win", "linux", "mac", "chromeos"],
+    "test_policy": { "UserCookiesExceptionsUsage": 2 },
+    "pref_mappings": [
+      { "pref": "profile.user_exceptions_usage.cookies" }
+    ]
+  },
+
+  "UserPopupsExceptionsUsage": {
+    "os": ["win", "linux", "mac", "chromeos"],
+    "test_policy": { "UserPopupsExceptionsUsage": 2 },
+    "pref_mappings": [
+      { "pref": "profile.user_exceptions_usage.popups" }
+    ]
+  },
+
   "AudioCaptureAllowed": {
     "os": ["win", "linux", "mac", "chromeos"],
     "test_policy": { "AudioCaptureAllowed": false },
     "pref_mappings": [
       { "pref": "hardware.audio_capture_enabled",
         "indicator_selector": "[content-setting=media-stream-mic][value=block]",
         "indicator_tests": [
           { "policy": { "AudioCaptureAllowed": false },
             "value": "block"
           }
@@ skipping 1502 matching lines @@
   },
 
   "ExtensionCacheSize": {
   },
 
   "DeviceLoginScreenDomainAutoComplete": {
   },
 
   "AllowKioskAppControlChromeVersion": {
   },
-  
+
   "LoginAuthenticationBehavior": {
     "os": ["chromeos"],
     "test_policy": { "LoginAuthenticationBehavior": 1 },
     "pref_mappings": [
       { "pref": "cros.device.login_authentication_behavior" }
     ]
   },
 
   "UsbDetachableWhitelist": {
   },
@@ skipping 37 matching lines @@
 
   "AdditionalLaunchParameters": {
   },
 
   "SuppressChromeFrameTurndownPrompt": {
   },
 
   "SkipMetadataCheck": {
   }
 }