Move Java Blimp shell code to app subpackage

blimp/client/app/android/java/src/org/chromium/blimp/BrowserRestartActivity.java

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.blimp;
-
-import android.app.Activity;
-import android.content.Context;
-import android.content.Intent;
-import android.os.Bundle;
-import android.os.Process;
-
-/**
- * Kills and (optionally) restarts the main Blimp process, then immediately kills itself.
- *
- * Starting this Activity requires passing in the process ID (the Intent should have the value of
- * Process#myPid() as an extra).
- *
- * This Activity runs on a separate process from the main Blimp browser and cannot see the main
- * process' Activities.  It is an workaround for crbug.com/515919 which doesn't use AlarmManager.
- */
-public class BrowserRestartActivity extends Activity {
-    private static final String EXTRA_MAIN_PID =
-            "org.chromium.blimp.browser.BrowserRestartActivity.main_pid";
-    private static final String EXTRA_RESTART =
-            "org.chromium.blimp.browser.BrowserRestartActivity.restart";
-
-    private static final String TAG = "BrowserRestartActivity";
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        destroyProcess(getIntent());
-    }
-
-    @Override
-    public void onNewIntent(Intent intent) {
-        destroyProcess(getIntent());
-    }
-
-    private void destroyProcess(Intent intent) {
-        // Kill the main Blimp process.
-        int mainBrowserPid = intent.getIntExtra(BrowserRestartActivity.EXTRA_MAIN_PID, -1);
-        assert mainBrowserPid != -1;
-        Process.killProcess(mainBrowserPid);
-
-        // Fire an Intent to restart Blimp.
-        boolean restart = intent.getBooleanExtra(BrowserRestartActivity.EXTRA_RESTART, false);
-        if (restart) {
-            Intent restartIntent = new Intent(Intent.ACTION_MAIN);
-            restartIntent.setPackage(getPackageName());
-            restartIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-            startActivity(restartIntent);
-        }
-
-        // Kill this process.
-        finish();
-        Process.killProcess(Process.myPid());
-    }
-
-    /**
-     * Helper method to create an Intent to restart the browser.
-     * @param context The current android context
-     * @return Intent to be fired
-     */
-    public static Intent createRestartIntent(Context context) {
-        Intent intent = new Intent();
-        intent.setClassName(context.getPackageName(), BrowserRestartActivity.class.getName());
-        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        intent.putExtra(BrowserRestartActivity.EXTRA_MAIN_PID, Process.myPid());
-        intent.putExtra(BrowserRestartActivity.EXTRA_RESTART, true);
-        return intent;
-    }
-}