Use browser.downloads.download to export files if available.

omega-target-chromium-extension/omega_debug.coffee

@@ -5,7 +5,13 @@ window.OmegaDebug =
     chrome.runtime.getManifest().version
   downloadLog: ->
     blob = new Blob [localStorage['log']], {type: "text/plain;charset=utf-8"}
-    saveAs(blob, "OmegaLog_#{Date.now()}.txt")
+    filename = "OmegaLog_#{Date.now()}.txt"
+
+    if browser?.downloads?.download?
+      url = URL.createObjectURL(blob)
+      browser.downloads.download({url: url, filename: filename})
+    else
+      saveAs(blob, filename)
   resetOptions: ->
     localStorage.clear()
     # Prevent options loading from sync storage after reload.

omega-target-chromium-extension/overlay/manifest.json

@@ -34,6 +34,7 @@
     "alarms",
     "storage",
     "webRequest",
+    "downloads",
     "webRequestBlocking",
     "contextMenus",
 

omega-web/src/omega/app.coffee

@@ -66,12 +66,14 @@ angular.module('omega').config ($stateProvider, $urlRouterProvider,
       controller: 'AboutCtrl'
     )
 
-angular.module('omega').factory 'omegaDebug', ($window, $rootScope) ->
+angular.module('omega').factory 'omegaDebug', ($window, $rootScope,
+  $injector) ->
   omegaDebug = $window.OmegaDebug ? {}
 
   omegaDebug.downloadLog ?= ->
+    downloadFile = $injector.get('downloadFile') ? saveAs
     blob = new Blob [localStorage['log']], {type: "text/plain;charset=utf-8"}
-    saveAs(blob, "OmegaLog_#{Date.now()}.txt")
+    downloadFile(blob, "OmegaLog_#{Date.now()}.txt")
 
   omegaDebug.reportIssue ?= ->
     $window.open(
@@ -82,3 +84,14 @@ angular.module('omega').factory 'omegaDebug', ($window, $rootScope) ->
     $rootScope.resetOptions()
 
   omegaDebug
+
+angular.module('omega').factory 'downloadFile', ->
+  if browser?.downloads?.download?
+    return (blob, filename) ->
+      url = URL.createObjectURL(blob)
+      if filename
+        browser.downloads.download({url: url, filename: filename})
+      else
+        browser.downloads.download({url: url})
+  else
+    return saveAs

omega-web/src/omega/controllers/io.coffee

@@ -1,5 +1,5 @@
 angular.module('omega').controller 'IoCtrl', ($scope, $rootScope,
-  $window, $http, omegaTarget) ->
+  $window, $http, omegaTarget, downloadFile) ->
 
   omegaTarget.state('web.restoreOnlineUrl').then (url) ->
     if url
@@ -10,7 +10,7 @@ angular.module('omega').controller 'IoCtrl', ($scope, $rootScope,
       plainOptions = angular.fromJson(angular.toJson($rootScope.options))
       content = JSON.stringify(plainOptions)
       blob = new Blob [content], {type: "text/plain;charset=utf-8"}
-      saveAs(blob, "OmegaOptions.bak")
+      downloadFile(blob, "OmegaOptions.bak")
 
   $scope.importSuccess = ->
     $rootScope.showAlert(

omega-web/src/omega/controllers/master.coffee

@@ -1,7 +1,7 @@
 angular.module('omega').controller 'MasterCtrl', ($scope, $rootScope, $window,
   $q, $modal, $state, profileColors, profileIcons, omegaTarget,
   $timeout, $location, $filter, getAttachedName, isProfileNameReserved,
-  isProfileNameHidden, dispNameFilter) ->
+  isProfileNameHidden, dispNameFilter, downloadFile) ->
 
   tr = $filter('tr')
 
@@ -42,7 +42,7 @@ angular.module('omega').controller 'MasterCtrl', ($scope, $rootScope, $window,
       pac = OmegaPac.PacGenerator.ascii(pac)
       blob = new Blob [pac], {type: "text/plain;charset=utf-8"}
       fileName = profileName.replace(/\W+/g, '_')
-      saveAs(blob, "OmegaProfile_#{fileName}.pac")
+      downloadFile(blob, "OmegaProfile_#{fileName}.pac")
       if missingProfile
         $timeout ->
           $rootScope.showAlert(

omega-web/src/omega/controllers/switch_profile.coffee

@@ -1,6 +1,6 @@
 angular.module('omega').controller 'SwitchProfileCtrl', ($scope, $rootScope,
   $location, $timeout, $q, $modal, profileIcons, getAttachedName, omegaTarget,
-  trFilter) ->
+  trFilter, downloadFile) ->
   # == Rule list ==
   $scope.ruleListFormats = OmegaPac.Profiles.ruleListFormats
 
@@ -20,7 +20,7 @@ angular.module('omega').controller 'SwitchProfileCtrl', ($scope, $rootScope,
 
     blob = new Blob [text], {type: "text/plain;charset=utf-8"}
     fileName = $scope.profile.name.replace(/\W+/g, '_')
-    saveAs(blob, "OmegaRules_#{fileName}.sorl")
+    downloadFile(blob, "OmegaRules_#{fileName}.sorl")
 
   exportLegacyRuleList = ->
     wildcardRules = ''
@@ -52,7 +52,7 @@ angular.module('omega').controller 'SwitchProfileCtrl', ($scope, $rootScope,
     """
     blob = new Blob [text], {type: "text/plain;charset=utf-8"}
     fileName = $scope.profile.name.replace(/\W+/g, '_')
-    saveAs(blob, "SwitchyRules_#{fileName}.ssrl")
+    downloadFile(blob, "SwitchyRules_#{fileName}.ssrl")
 
   # == Condition types ==
   $scope.conditionHelp =