Fixes disabled torrent viewer torrent download

Resolves brave#10767

Auditors:

Test Plan:

js/stores/appStore.js

@@ -35,6 +35,7 @@ const platformUtil = require('../../app/common/lib/platformUtil')
 const urlUtil = require('../lib/urlutil')
 const buildConfig = require('../constants/buildConfig')
 const {shouldDebugStoreActions} = require('../../app/cmdLine')
+const getSetting = require('../settings').getSetting
 
 // state helpers
 const {makeImmutable, findNullKeyPaths} = require('../../app/common/state/immutableUtil')
@@ -46,6 +47,7 @@ const tabState = require('../../app/common/state/tabState')
 const bookmarksState = require('../../app/common/state/bookmarksState')
 const bookmarkFoldersState = require('../../app/common/state/bookmarkFoldersState')
 const historyState = require('../../app/common/state/historyState')
+const config = require('../constants/config')
 
 // Only used internally
 const CHANGE_EVENT = 'app-state-change'
@@ -202,6 +204,14 @@ const applyReducers = (state, action, immutableAction) => reducers.reduce(
       return newState
     }, appState)
 
+const isWebTorrentEnabled = (state) => {
+  const settingsState = state.get('settings')
+  const extension = extensionState.getExtensionById(state, config.torrentExtensionId)
+  const extensionEnabled = extension !== undefined ? extension.get('enabled') : false
+  const torrentEnabled = getSetting(settings.TORRENT_VIEWER_ENABLED, settingsState)
+  return extensionEnabled && torrentEnabled
+}
+
 const handleAppAction = (action) => {
   const ledgerReducer = require('../../app/browser/reducers/ledgerReducer')
   const timeStart = process.hrtime()
@@ -271,7 +281,9 @@ const handleAppAction = (action) => {
       // TODO(bridiver) - these should be refactored into reducers
       appState = filtering.init(appState, action, appStore)
       appState = basicAuth.init(appState, action, appStore)
-      appState = webtorrent.init(appState, action, appStore)
+      if (isWebTorrentEnabled(appState)) {
+        appState = webtorrent.init(appState, action, appStore)
+      }
       appState = profiles.init(appState, action, appStore)
       appState = require('../../app/sync').init(appState, action, appStore)
       calculateTopSites(true, true)