Revert "Revert "Expose CompleteContact as its own API on Streams""

This reverts commit 5f35c93.

src/api.js

@@ -636,6 +636,13 @@
     }, callbacks);
   };
 
+  Contact.prototype.complete = function (callbacks) {
+    var client = connect.core.getClient();
+    client.call(connect.ClientMethods.COMPLETE_CONTACT, {
+      contactId: this.getContactId()
+    }, callbacks);
+  };
+
   Contact.prototype.notifyIssue = function (issueCode, description, callbacks) {
     var client = connect.core.getClient();
     client.call(connect.ClientMethods.NOTIFY_CONTACT_ISSUE, {
@@ -800,24 +807,12 @@
     return this._getData().monitoringInfo;
   };
 
-
   Connection.prototype.destroy = function (callbacks) {
     var client = connect.core.getClient();
-    var contact = new Contact(this.getContactId());
-    var shouldUseCompleteContact = (
-      contact.getStatus().type === connect.ContactStateType.ENDED &&
-      contact.getType() === connect.ContactType.CHAT
-    );
-    if (shouldUseCompleteContact) {
-      client.call(connect.ClientMethods.COMPLETE_CONTACT, {
-        contactId: this.getContactId()
-      }, callbacks);
-    } else {
-      client.call(connect.ClientMethods.DESTROY_CONNECTION, {
-        contactId: this.getContactId(),
-        connectionId: this.getConnectionId()
-      }, callbacks);
-    }
+    client.call(connect.ClientMethods.DESTROY_CONNECTION, {
+      contactId: this.getContactId(),
+      connectionId: this.getConnectionId()
+    }, callbacks);
   };
 
   Connection.prototype.sendDigits = function (digits, callbacks) {