pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/bouncer/java/org/mozilla/gecko/BrowserApp.java

@@ -0,0 +1,46 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; 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 android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.util.Log;
+
+import org.mozilla.bouncer.BouncerService;
+
+/**
+ * Bouncer activity version of BrowserApp.
+ *
+ * This class has the same name as org.mozilla.gecko.BrowserApp to preserve
+ * shortcuts created by the bouncer app.
+ */
+public class BrowserApp extends Activity {
+    private static final String LOGTAG = "GeckoBouncerActivity";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // This races distribution installation against the Play Store killing our process to
+        // install the update.  We'll live with it.  To do better, consider using an Intent to
+        // notify when the service has completed.
+        startService(new Intent(this, BouncerService.class));
+
+        final String appPackageName = Uri.encode(getPackageName());
+        final Uri uri = Uri.parse("market://details?id=" + appPackageName);
+        Log.i(LOGTAG, "Lanching activity with URL: " + uri.toString());
+
+        // It might be more correct to catch failure in case the Play Store isn't installed.  The
+        // fallback action is to open the Play Store website... but doing so may offer Firefox as
+        // browser (since even the bouncer offers to view URLs), which will be very confusing.
+        // Therefore, we don't try to be fancy here, and we just fail (silently).
+        startActivity(new Intent(Intent.ACTION_VIEW, uri));
+
+        finish();
+    }
+}