Call chrome.runtime.sendMessage's callback without arguments upon fail

extensions/renderer/resources/messaging.js

Index: extensions/renderer/resources/messaging.js
diff --git a/extensions/renderer/resources/messaging.js b/extensions/renderer/resources/messaging.js
index ef562779ad847e2d29d780e231b1c313c195a9c8..3b98432f887000fbfeba505e28bf17c28645c300 100644
--- a/extensions/renderer/resources/messaging.js
+++ b/extensions/renderer/resources/messaging.js
@@ -339,7 +339,13 @@
       // Save a reference so that we don't re-entrantly call responseCallback.
       var sendResponse = responseCallback;
       responseCallback = null;
-      sendResponse(response);
+      if (arguments.length === 0) {
+        // According to the documentation of chrome.runtime.sendMessage, the
+        // callback is invoked without any arguments when an error occurs.
+        sendResponse();
+      } else {
+        sendResponse(response);
+      }
     }