Bug 1559835 - Remove comment at tabs.update(active:false) r=rpl

Differential Revision: https://phabricator.services.mozilla.com/D48817

--HG--
extra : moz-landing-system : lando

browser/components/extensions/parent/ext-tabs.js

@@ -827,12 +827,8 @@ this.tabs = class extends ExtensionAPI {
             nativeTab.linkedBrowser.loadURI(url, options);
           }
 
-          if (updateProperties.active !== null) {
-            if (updateProperties.active) {
-              tabbrowser.selectedTab = nativeTab;
-            } else {
-              // Not sure what to do here? Which tab should we select?
-            }
+          if (updateProperties.active) {
+            tabbrowser.selectedTab = nativeTab;
           }
           if (updateProperties.highlighted !== null) {
             if (!gMultiSelectEnabled) {

mobile/android/components/extensions/ext-tabs.js

@@ -411,12 +411,8 @@ this.tabs = class extends ExtensionAPI {
             nativeTab.browser.loadURI(url, options);
           }
 
-          if (updateProperties.active !== null) {
-            if (updateProperties.active) {
-              BrowserApp.selectTab(nativeTab);
-            } else {
-              // Not sure what to do here? Which tab should we select?
-            }
+          if (updateProperties.active) {
+            BrowserApp.selectTab(nativeTab);
           }
           // FIXME: highlighted/selected, muted, pinned, openerTabId, successorTabId