Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/init/ChromeLifetimeController.java

 // Copyright 2015 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.chrome.browser.init;
 
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Process;
@@ skipping 17 matching lines @@
  * https://crbug.com/515919 details why another Activity is used instead of using the AlarmManager.
  * https://crbug.com/545453 details why the BrowserRestartActivity handles the process killing.
  */
 class ChromeLifetimeController implements ApplicationLifetime.Observer,
         ApplicationStatus.ActivityStateListener {
     private static final String TAG = "LifetimeController";
 
     private static ChromeLifetimeController sInstance;
 
     private boolean mRestartChromeOnDestroy;
-    private int mRemainingActivitiesCount = 0;
+    private int mRemainingActivitiesCount;
 
     /**
      * Initialize the ChromeLifetimeController;
      */
     @SuppressFBWarnings("LI_LAZY_INIT_UPDATE_STATIC")
     public static void initialize() {
         ThreadUtils.assertOnUiThread();
         if (sInstance != null) return;
         sInstance = new ChromeLifetimeController();
         ApplicationLifetime.addObserver(sInstance);
@@ skipping 34 matching lines @@
         Intent intent = new Intent();
         intent.setAction(action);
         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, mRestartChromeOnDestroy);
         context.startActivity(intent);
     }
 }