Bug 1619221 - Remove service-workers-debug-helper and check isParentIntercept in device actor r=ladybenko,daisuke

Depends on D81344

If we only care about isParentInterceptEnabled, a dedicated module should no longer be relevant.

Differential Revision: https://phabricator.services.mozilla.com/D81346

devtools/server/actors/device.js

@@ -8,10 +8,14 @@ const { Ci, Cc } = require("chrome");
 const Services = require("Services");
 const protocol = require("devtools/shared/protocol");
 const { LongStringActor } = require("devtools/server/actors/string");
-const {
-  canDebugServiceWorkers,
-  isParentInterceptEnabled,
-} = require("devtools/shared/service-workers-debug-helper");
+
+const { XPCOMUtils } = require("resource://gre/modules/XPCOMUtils.jsm");
+XPCOMUtils.defineLazyServiceGetter(
+  this,
+  "swm",
+  "@mozilla.org/serviceworkers/manager;1",
+  "nsIServiceWorkerManager"
+);
 
 const { DevToolsServer } = require("devtools/server/devtools-server");
 const { getSystemInfo } = require("devtools/shared/system");
@@ -40,8 +44,10 @@ exports.DeviceActor = protocol.ActorClassWithSpec(deviceSpec, {
 
   getDescription: function() {
     return Object.assign({}, getSystemInfo(), {
-      canDebugServiceWorkers: canDebugServiceWorkers(),
-      isParentInterceptEnabled: isParentInterceptEnabled(),
+      // ServiceWorker debugging is only supported when parent-intercept is
+      // enabled. This cannot change at runtime, so it can be treated as a
+      // constant for the device.
+      canDebugServiceWorkers: swm.isParentInterceptEnabled(),
     });
   },
 

devtools/shared/moz.build

@@ -71,7 +71,6 @@ DevToolsModules(
     'picker-constants.js',
     'plural-form.js',
     'protocol.js',
-    'service-workers-debug-helper.js',
     'system.js',
     'task.js',
     'ThreadSafeDevToolsUtils.js',

devtools/shared/service-workers-debug-helper.js

@@ -1,42 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-"use strict";
-
-const Services = require("Services");
-const { XPCOMUtils } = require("resource://gre/modules/XPCOMUtils.jsm");
-
-XPCOMUtils.defineLazyServiceGetter(
-  this,
-  "swm",
-  "@mozilla.org/serviceworkers/manager;1",
-  "nsIServiceWorkerManager"
-);
-
-/**
- * This helper provides info on whether we can debug service workers or not.
- * This depends both on the current multiprocess (e10s) configuration and on the
- * usage of the new service worker implementation
- * (dom.serviceWorkers.parent_intercept = true).
- */
-
-function canDebugServiceWorkers() {
-  const isE10s = Services.appinfo.browserTabsRemoteAutostart;
-  const processCount = Services.appinfo.maxWebProcessCount;
-  const multiE10s = isE10s && processCount > 1;
-  const isNewSWImplementation = swm.isParentInterceptEnabled();
-
-  // When can we debug Service Workers?
-  // If we're running the new implementation, OR if not in multiprocess mode
-  return isNewSWImplementation || !multiE10s;
-}
-
-function isParentInterceptEnabled() {
-  return swm.isParentInterceptEnabled();
-}
-
-module.exports = {
-  canDebugServiceWorkers,
-  isParentInterceptEnabled,
-};