chrome.webRequest.*.removeListener removes callbacks that were registered multiple times

chrome/test/data/extensions/api_test/webrequest/test_api.js

Index: chrome/test/data/extensions/api_test/webrequest/test_api.js
diff --git a/chrome/test/data/extensions/api_test/webrequest/test_api.js b/chrome/test/data/extensions/api_test/webrequest/test_api.js
index 4790ab11e6070ec4ddfc0e3827a34cfb1b21c2e9..69af8433d5b8b1b1edb500e737d59dfa24c8c26e 100644
--- a/chrome/test/data/extensions/api_test/webrequest/test_api.js
+++ b/chrome/test/data/extensions/api_test/webrequest/test_api.js
@@ -44,6 +44,10 @@ chrome.test.runTests([
     event.removeListener(cb2);
     chrome.test.assertFalse(event.hasListener(cb1));
     chrome.test.assertFalse(event.hasListener(cb2));
+    event.addListener(cb1, {urls: ["http://foo/*"]});
+    event.addListener(cb1, {urls: ["http://bar/*"]});
+    event.removeListener(cb1);
+    chrome.test.assertFalse(event.hasListener(cb1));
     chrome.test.succeed();
   },