Remove terminal id in terminalPrivate.closeTerminalProcess()

Bug: 1145053
Change-Id: I99bcbf0afe97ddc8d2ad8486e8683b645668d4b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536412
Commit-Queue: Jason Lin <lxj@google.com>
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Auto-Submit: Jason Lin <lxj@google.com>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827068}

chrome/browser/extensions/api/terminal/terminal_private_api.cc

@@ -482,6 +482,8 @@ TerminalPrivateCloseTerminalProcessFunction::Run() {
     LOG(ERROR) << "invalid terminal id " << params->id;
     return RespondNow(Error("invalid terminal id"));
   }
+  TerminalTabHelper::FromWebContents(GetSenderWebContents())
+      ->RemoveTerminalId(params->id);
 
   // Registry lives on its own task runner.
   chromeos::ProcessProxyRegistry::GetTaskRunner()->PostTask(