Make Basilisk function without WebExtensions

browser/base/content/tab-content.js

@@ -9,7 +9,9 @@ var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
 
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
+#ifdef MOZ_WEBEXTENSIONS
 Cu.import("resource://gre/modules/ExtensionContent.jsm");
+#endif
 
 XPCOMUtils.defineLazyModuleGetter(this, "E10SUtils",
   "resource:///modules/E10SUtils.jsm");
@@ -929,11 +931,13 @@ var UserContextIdNotifier = {
 
 UserContextIdNotifier.init();
 
+#ifdef MOZ_WEBEXTENSIONS
 ExtensionContent.init(this);
 addEventListener("unload", () => {
   ExtensionContent.uninit(this);
   RefreshBlocker.uninit();
 });
+#endif
 
 addMessageListener("AllowScriptsToClose", () => {
   content.QueryInterface(Ci.nsIInterfaceRequestor)

browser/base/content/urlbarBindings.xml

@@ -56,10 +56,11 @@ file, You can obtain one at http://mozilla.org/MPL/2.0/.
       <field name="AppConstants" readonly="true">
         (Components.utils.import("resource://gre/modules/AppConstants.jsm", {})).AppConstants;
       </field>
-
+#ifdef MOZ_WEBEXTENSIONS
       <field name="ExtensionSearchHandler" readonly="true">
         (Components.utils.import("resource://gre/modules/ExtensionSearchHandler.jsm", {})).ExtensionSearchHandler;
       </field>
+#endif
 
       <constructor><![CDATA[
         this._prefs = Components.classes["@mozilla.org/preferences-service;1"]
@@ -487,6 +488,7 @@ file, You can obtain one at http://mozilla.org/MPL/2.0/.
                   actionDetails
                 );
                 break;
+#ifdef MOZ_WEBEXTENSIONS
               case "extension":
                 this.handleRevert();
                 // Give the extension control of handling the command.
@@ -494,6 +496,7 @@ file, You can obtain one at http://mozilla.org/MPL/2.0/.
                 let keyword = action.params.keyword;
                 this.ExtensionSearchHandler.handleInputEntered(keyword, searchString, where);
                 return;
+#endif
             }
           } else {
             // This is a fallback for add-ons and old testing code that directly
@@ -1211,9 +1214,11 @@ file, You can obtain one at http://mozilla.org/MPL/2.0/.
           this._clearNoActions();
           this.formatValue();
         }
+#ifdef MOZ_WEBEXTENSIONS
         if (ExtensionSearchHandler.hasActiveInputSession()) {
           ExtensionSearchHandler.handleInputCancelled();
         }
+#endif
       ]]></handler>
 
       <handler event="dragstart" phase="capturing"><![CDATA[

browser/base/jar.mn

@@ -99,7 +99,7 @@ browser.jar:
 #endif
         content/browser/browser-thumbnails.js         (content/browser-thumbnails.js)
         content/browser/browser-trackingprotection.js (content/browser-trackingprotection.js)
-        content/browser/tab-content.js                (content/tab-content.js)
+*       content/browser/tab-content.js                (content/tab-content.js)
         content/browser/content.js                    (content/content.js)
         content/browser/social-content.js             (content/social-content.js)
         content/browser/defaultthemes/1.footer.jpg    (content/defaultthemes/1.footer.jpg)
@@ -166,7 +166,7 @@ browser.jar:
         content/browser/contentSearchUI.css           (content/contentSearchUI.css)
         content/browser/tabbrowser.css                (content/tabbrowser.css)
         content/browser/tabbrowser.xml                (content/tabbrowser.xml)
-        content/browser/urlbarBindings.xml            (content/urlbarBindings.xml)
+*       content/browser/urlbarBindings.xml            (content/urlbarBindings.xml)
         content/browser/utilityOverlay.js             (content/utilityOverlay.js)
         content/browser/usercontext.svg               (content/usercontext.svg)
         content/browser/web-panels.js                 (content/web-panels.js)