[Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIWindowlessBrowser.close]"  nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)"  location: "JS frame :: chrome://extensions/content/ext-backgroundPage.js :: shutdown :: line 130"  data: no]: shutdown@chrome://extensions/content/ext-backgroundPage.js:130:5
@chrome://extensions/content/ext-backgroundPage.js:149:5
emit@resource://devtools/shared/event-emitter.js:164:13
emit@resource://gre/modules/Extension.jsm:229:29
shutdown@resource://gre/modules/Extension.jsm:1465:5
SpecialPowersObserverAPI.prototype._receiveMessageAPI@chrome://mochikit/content/tests/SimpleTest/SpecialPowersObserverAPI.js:646:9
ChromePowers.prototype._receiveMessage@chrome://mochikit/content/tests/SimpleTest/ChromePowers.js:83:14
ChromePowers.prototype._sendAsyncMessage@chrome://mochikit/content/tests/SimpleTest/ChromePowers.js:45:3
unload@chrome://mochikit/content/tests/SimpleTest/specialpowersAPI.js:1956:9
test_delete@chrome://mochitests/content/browser/browser/components/extensions/test/browser/browser_ext_history.js:124:9
TaskImpl_run@resource://gre/modules/Task.jsm:319:40
promise callback*TaskImpl_handleResultValue@resource://gre/modules/Task.jsm:395:7
TaskImpl_run@resource://gre/modules/Task.jsm:327:13
Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:937:23
this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:816:7
Promise*this.PromiseWalker.scheduleWalkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:747:11
this.PromiseWalker.schedulePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:779:7
this.PromiseWalker.completePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:714:7
TaskImpl_run@resource://gre/modules/Task.jsm:324:13
promise callback*TaskImpl_handleResultValue@resource://gre/modules/Task.jsm:395:7
TaskImpl_run@resource://gre/modules/Task.jsm:327:13
promise callback*TaskImpl_handleResultValue@resource://gre/modules/Task.jsm:395:7
TaskImpl_run@resource://gre/modules/Task.jsm:327:13
TaskImpl@resource://gre/modules/Task.jsm:280:3
createAsyncFunction/asyncFunction@resource://gre/modules/Task.jsm:254:14
test_delete@chrome://mochitests/content/browser/browser/components/extensions/test/browser/browser_ext_history.js:113:12
TaskImpl_run@resource://gre/modules/Task.jsm:319:40
Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:937:23
this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:816:7
Promise*this.PromiseWalker.scheduleWalkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:747:11
this.PromiseWalker.schedulePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:779:7
this.PromiseWalker.completePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:714:7
TaskImpl_run@resource://gre/modules/Task.jsm:324:13
promise callback*TaskImpl_handleResultValue@resource://gre/modules/Task.jsm:395:7
TaskImpl_run@resource://gre/modules/Task.jsm:327:13