diff --git a/dom/base/ConsoleAPI.js b/dom/base/ConsoleAPI.js
index 066b1b239f35..3403d2ad9c5a 100644
--- a/dom/base/ConsoleAPI.js
+++ b/dom/base/ConsoleAPI.js
@@ -62,7 +62,7 @@ ConsoleAPI.prototype = {
     }
 
     let self = this;
-    let chromeObject = {
+    return {
       // window.console API
       log: function CA_log() {
         self.notifyObservers(id, "log", arguments);
@@ -76,31 +76,10 @@ ConsoleAPI.prototype = {
       error: function CA_error() {
         self.notifyObservers(id, "error", arguments);
       },
-      __exposedProps__: {
-        log: "r",
-        info: "r",
-        warn: "r",
-        error: "r"
-      }
+      // many flavors of console objects exist on the web, so calling
+      // unimplemented methods shouldn't be fatal. See bug 614350
+      __noSuchMethod__: function CA_nsm() {}
     };
-
-    // We need to return an actual content object here, instead of a wrapped
-    // chrome object. This allows things like console.log.bind() to work.
-    let sandbox = Cu.Sandbox(aWindow);
-    let contentObject = Cu.evalInSandbox(
-        "(function(x) {\
-          var bind = Function.bind;\
-          return {\
-            log: bind.call(x.log, x),\
-            info: bind.call(x.info, x),\
-            warn: bind.call(x.warn, x),\
-            error: bind.call(x.error, x),\
-            __mozillaConsole__: true,\
-            __noSuchMethod__: function() {}\
-          };\
-        })", sandbox)(chromeObject);
-
-      return contentObject;
   },
 
   /**
diff --git a/toolkit/components/console/hudservice/HUDService.jsm b/toolkit/components/console/hudservice/HUDService.jsm
index eb230fd5140b..ffd94a3dd1f0 100644
--- a/toolkit/components/console/hudservice/HUDService.jsm
+++ b/toolkit/components/console/hudservice/HUDService.jsm
@@ -2696,9 +2696,20 @@ HUD_SERVICE.prototype =
       }
     }
 
-    // Need to detect that the console component has been paved over.
+    // Need to detect that the console component has been paved over. Do this by
+    // checking whether its global object is equal to that of an object
+    // returned by our native ConsoleAPI nsIDOMGlobalPropertyInitializer.
     let consoleObject = unwrap(aContentWindow).console;
-    if (!("__mozillaConsole__" in consoleObject))
+    let consoleGlobal = Cu.getGlobalForObject(consoleObject);
+
+    let nativeConsoleObj = Cc["@mozilla.org/console-api;1"].
+                           createInstance(Ci.nsIDOMGlobalPropertyInitializer).
+                           init(aContentWindow);
+    let nativeConsoleGlobal = Cu.getGlobalForObject(nativeConsoleObj);
+
+    // Need a "===" comparison because backstagepass objects have strange
+    // behavior with ==
+    if (consoleGlobal !== nativeConsoleGlobal)
       this.logWarningAboutReplacedAPI(hudId);
 
     // register the controller to handle "select all" properly
diff --git a/toolkit/mozapps/extensions/content/extensions-content.js b/toolkit/mozapps/extensions/content/extensions-content.js
index 41c09faefa55..bc065d323dc0 100644
--- a/toolkit/mozapps/extensions/content/extensions-content.js
+++ b/toolkit/mozapps/extensions/content/extensions-content.js
@@ -49,7 +49,7 @@ var gIoService = Components.classes["@mozilla.org/network/io-service;1"]
                            .getService(Components.interfaces.nsIIOService);
 
 function createInstallTrigger(window) {
-  let chromeObject = {
+  return {
     window: window,
 
     __exposedProps__: {
@@ -61,7 +61,9 @@ function createInstallTrigger(window) {
       updateEnabled: "r",
       install: "r",
       installChrome: "r",
-      startSoftwareUpdate: "r"
+      startSoftwareUpdate: "r",
+      toString: "r",
+      toSource: "r", // XXX workaround for bug 582100
     },
 
     // == Public interface ==
@@ -186,26 +188,6 @@ function createInstallTrigger(window) {
       }
     }
   };
-
-  let sandbox = Cu.Sandbox(window);
-  let obj = Cu.evalInSandbox(
-    "(function (x) {\
-       var bind = Function.bind;\
-       return {\
-         enabled: bind.call(x.enabled, x);\
-         updateEnabled: bind.call(x.updateEnabled, x);\
-         install: bind.call(x.install, x);\
-         installChrome: bind.call(x.installChrome, x);\
-         startSoftwareUpdate: bind.call(x.startSoftwareUpdate, x);\
-       };\
-     })", sandbox)(chromeObject);
-
-  obj.SKIN = chromeObject.SKIN;
-  obj.LOCALE = chromeObject.LOCALE;
-  obj.CONTENT = chromeObject.CONTENT;
-  obj.PACKAGE = chromeObject.PACKAGE;
-
-  return obj;
 };
 
 /**