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

chrome/renderer/resources/extensions/schema_generated_bindings.js

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This script contains privileged chrome extension related javascript APIs.
 // It is loaded by pages whose URL has the chrome-extension protocol.
 
 var chrome = chrome || {};
 (function() {
   native function GetExtensionAPIDefinition();
@@ skipping 251 matching lines @@
         cb.apply(null, [details, handledCallback]);
       };
     }
     this.subEvents_.push(
         {subEvent: subEvent, callback: cb, subEventCallback: subEventCallback});
     subEvent.addListener(subEventCallback);
   };
 
   // Unregisters a callback.
   chrome.WebRequestEvent.prototype.removeListener = function(cb) {
-    var idx = this.findListener_(cb);
-    if (idx < 0) {
-      return;
+    var idx;
+    while ((idx = this.findListener_(cb)) >= 0) {
+      var e = this.subEvents_[idx];
+      e.subEvent.removeListener(e.subEventCallback);
+      if (e.subEvent.hasListeners()) {
+        console.error(
+            "Internal error: webRequest subEvent has orphaned listeners.");
+      }
+      this.subEvents_.splice(idx, 1);
     }
-
-    var e = this.subEvents_[idx];
-    e.subEvent.removeListener(e.subEventCallback);
-    if (e.subEvent.hasListeners()) {
-      console.error(
-          "Internal error: webRequest subEvent has orphaned listeners.");
-    }
-    this.subEvents_.splice(idx, 1);
   };
 
   chrome.WebRequestEvent.prototype.findListener_ = function(cb) {
     for (var i in this.subEvents_) {
       var e = this.subEvents_[i];
       if (e.callback === cb) {
         if (e.subEvent.findListener_(e.subEventCallback) > -1)
           return i;
         console.error("Internal error: webRequest subEvent has no callback.");
       }
@@ skipping 822 matching lines @@
 
   if (!chrome.tts)
     chrome.tts = {};
 
   if (!chrome.ttsEngine)
     chrome.ttsEngine = {};
 
   if (!chrome.experimental.downloads)
     chrome.experimental.downloads = {};
 })();