Cleanup: make ExtensionRequestSender manage its IPC responses directly, rather

chrome/renderer/resources/extensions/send_request.js

Index: chrome/renderer/resources/extensions/send_request.js
diff --git a/chrome/renderer/resources/extensions/send_request.js b/chrome/renderer/resources/extensions/send_request.js
index 2ea6545dfaabcae2acbaff9ae38f610ee61fc7e1..4ef4eec6e937d886555d35b74bd8801e20194770 100644
--- a/chrome/renderer/resources/extensions/send_request.js
+++ b/chrome/renderer/resources/extensions/send_request.js
@@ -114,13 +114,15 @@ function sendRequest(functionName, args, argSchemas, opt_args) {
       chromeHidden.JSON.stringify(request.args) : request.args;
   var nativeFunction = opt_args.nativeFunction || natives.StartRequest;
 
-  var requestId = natives.GetNextRequestId();
-  request.id = requestId;
-  requests[requestId] = request;
-  var hasCallback =
-      (request.callback || opt_args.customCallback) ? true : false;
-  return nativeFunction(functionName, requestArgs, requestId, hasCallback,
-                        opt_args.forIOThread);
+  var hasCallback = !!(request.callback || opt_args.customCallback);
+  var requestId = nativeFunction(functionName,
+                                 requestArgs,
+                                 hasCallback,
+                                 opt_args.forIOThread);
+  if (typeof(requestId) == 'number' && requestId >= 0) {
+    request.id = requestId;
+    requests[requestId] = request;
+  }
 }
 
 exports.sendRequest = sendRequest;