Release polls behind feature flag.

app/src/main/protowire/Database.proto

@@ -532,6 +532,7 @@ message MessageExtras {
         signalservice.GroupContext gv1Context = 2;
         ProfileChangeDetails profileChangeDetails = 3;
         PaymentTombstone paymentTombstone = 4;
+        PollTerminate pollTerminate = 5;
     }
 }
 
@@ -546,6 +547,12 @@ message PaymentTombstone {
     CryptoValue fee = 3;
 }
 
+message PollTerminate {
+    string question = 1;
+    uint64 messageId = 2;
+    uint64 targetTimestamp = 3;
+}
+
 message LocalRegistrationMetadata {
     bytes aciIdentityKeyPair = 1;
     bytes aciSignedPreKey = 2;

app/src/main/protowire/JobData.proto

@@ -243,3 +243,11 @@ message BackupDeleteJobData {
 message SecondRoundFixupSendJobData {
   uint64 messageId = 1;
 }
+
+message PollVoteJobData {
+  uint64 messageId = 1;
+  repeated uint64 recipients = 2;
+  uint32 initialRecipientCount = 3;
+  uint32 voteCount = 4;
+  bool isRemoval = 5;
+}