cros: Remove system-level policy for audio capture allowed

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 1806 matching lines @@
 
   "AudioOutputAllowed": {
     "os": ["chromeos"],
     "test_policy": { "AudioOutputAllowed": true },
     "pref_mappings": [
       { "pref": "hardware.audio_output_enabled",
         "local_state": true }
     ]
   },
 
-  "AudioCaptureAllowed": {
-    "os": ["chromeos"],
-    "test_policy": { "AudioCaptureAllowed": true },
-    "pref_mappings": [
-      { "pref": "hardware.audio_capture_enabled",
-        "local_state": true }

[pastarmovj, 2015/01/05 14:53:53]

IIRC you should leave this in here for the user pref backed policy. Only remove
this line that states that the policy is backed by local_state.

[James Cook, 2015/01/05 19:08:14]

Done, but I'm not sure this is necessary. Is the AudioCaptureAllowed user pref
policy testing handled by the data at line 1102?  Or does it mean something
special that this block sets AudioCaptureAllowed to true vs. 1102 setting it
false?  (False seems like the value you want policy to enforce.)

-    ]
-  },
-
   "ShowLogoutButtonInTray": {
     "os": ["chromeos"],
     "test_policy": { "ShowLogoutButtonInTray": true },
     "pref_mappings": [
       { "pref": "show_logout_button_in_tray" }
     ]
   },
 
   "ShelfAutoHideBehavior": {
     "os": ["chromeos"],
@@ skipping 606 matching lines @@
 
   "AdditionalLaunchParameters": {
   },
 
   "SuppressChromeFrameTurndownPrompt": {
   },
 
   "SkipMetadataCheck": {
   }
 }