Do not mark CameraEnabled proto before it is removed from ChromeOS.

chrome/browser/policy/proto/chromeos/chrome_device_policy.proto

Index: chrome/browser/policy/proto/chromeos/chrome_device_policy.proto
diff --git a/chrome/browser/policy/proto/chromeos/chrome_device_policy.proto b/chrome/browser/policy/proto/chromeos/chrome_device_policy.proto
index 61bac677093f3eb5461cabb4c1145204582ffd00..0364e0f44811ee4404abae26b2950d94b631211d 100644
--- a/chrome/browser/policy/proto/chromeos/chrome_device_policy.proto
+++ b/chrome/browser/policy/proto/chromeos/chrome_device_policy.proto
@@ -64,9 +64,8 @@ message DeviceProxySettingsProto {
   optional string proxy_bypass_list = 4;
 }
 
-// This was added to the protobuf definition but never implemented. Chrome can
-// meanwhile lock down access to media devices via a user policy, so the
-// device-level setting is deprecated for good.
+// This is used by chromeos, make sure to do cleanup there before marking it as
+// obsolette.
 message CameraEnabledProto {
   optional bool camera_enabled = 1;
 }
@@ -545,7 +544,7 @@ message ChromeDeviceSettingsProto {
   optional UserWhitelistProto user_whitelist = 2;
   optional GuestModeEnabledProto guest_mode_enabled = 3;
   optional DeviceProxySettingsProto device_proxy_settings = 4;
-  optional CameraEnabledProto OBSOLETE_camera_enabled = 5 [deprecated = true];
+  optional CameraEnabledProto camera_enabled = 5;
   optional ShowUserNamesOnSigninProto show_user_names = 6;
   optional DataRoamingEnabledProto data_roaming_enabled = 7;
   optional AllowNewUsersProto allow_new_users = 8;