Bug 1583738 - Remove unused isDescriptor trait from webextension descriptor r=daisuke

Differential Revision: https://phabricator.services.mozilla.com/D78002

devtools/client/fronts/descriptors/webextension.js

@@ -60,13 +60,7 @@ class WebExtensionDescriptorFront extends FrontClassWithSpec(
       // the addon (e.g. when the addon is disabled or uninstalled).
       // To retrieve the target actor instance, we call its "connect" method, (which
       // fetches the target actor targetForm from a WebExtensionTargetActor instance).
-      let form = null;
-      // FF70+ The method is now called getTarget`
-      if (!this.traits.isDescriptor) {
-        form = await super.connect();
-      } else {
-        form = await super.getTarget();
-      }
+      const form = await super.getTarget();
       const front = new BrowsingContextTargetFront(this.conn, null, this);
       front.form(form);
       this.manage(front);

devtools/server/actors/descriptors/webextension.js

@@ -83,11 +83,7 @@ const WebExtensionDescriptorActor = protocol.ActorClassWithSpec(
         manifestURL: policy && policy.getURL("manifest.json"),
         name: this.addon.name,
         temporarilyInstalled: this.addon.temporarilyInstalled,
-        traits: {
-          // checked in the front descriptor.
-          // remove when FF70 is on release channel
-          isDescriptor: true,
-        },
+        traits: {},
         type: this.addon.type,
         url: this.addon.sourceURI ? this.addon.sourceURI.spec : undefined,
         warnings: ExtensionParent.DebugUtils.getExtensionManifestWarnings(