Disable the start pane

mobile/android/base/GeckoProfile.java

 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
  * 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/. */
 
 package org.mozilla.gecko;
 
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.FileReader;
@@ skipping 639 matching lines @@
             try {
                 writer.append("{\"created\": " + System.currentTimeMillis() + "}\n");
             } finally {
                 writer.close();
             }
         } catch (Exception e) {
             // Best-effort.
             Log.w(LOGTAG, "Couldn't write times.json.", e);
         }
 
-        // Initialize pref flag for displaying the start pane for a new non-webapp profile.
-        if (!mIsWebAppProfile) {
-            final SharedPreferences prefs = GeckoSharedPrefs.forProfile(mApplicationContext);
-            prefs.edit().putBoolean(BrowserApp.PREF_STARTPANE_ENABLED, true).apply();
-        }
+        // PREF_STARTPANE_ENABLED was set to true for non-webapp profiles here.
+        // In Adblock Browser however, we never want to see the start pane.
 
         return profileDir;
     }
 
     /**
      * This method is called once, immediately before creation of the profile
      * directory completes.
      *
      * It queues up work to be done in the background to prepare the profile,
      * such as adding default bookmarks.
@@ skipping 18 matching lines @@
                 // indices of the distribution and default bookmarks are
                 // contiguous. Because there are always at least as many
                 // bookmarks as there are favicons, we can also guarantee that
                 // the favicon IDs won't overlap.
                 final int offset = BrowserDB.addDistributionBookmarks(cr, distribution, 0);
                 BrowserDB.addDefaultBookmarks(context, cr, offset);
             }
         });
     }
 }