Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadBridge.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.chrome.browser.offlinepages.downloads;
 
 import android.content.ComponentName;
 import android.support.annotation.Nullable;
 
 import org.chromium.base.ObserverList;
@@ skipping 42 matching lines @@
          */
         public void onItemDeleted(String guid) {}
 
         /**
          * Event fired when an new item was updated.
          * @param item A newly updated download item.
          */
         public void onItemUpdated(OfflinePageDownloadItem item) {}
     }
 
-    private static boolean sIsTesting = false;
+    private static boolean sIsTesting;
     private final ObserverList<Observer> mObservers = new ObserverList<Observer>();
     private long mNativeOfflinePageDownloadBridge;
     private boolean mIsLoaded;
 
     /**
      * Gets DownloadServiceDelegate that is suitable for interacting with offline download items.
      */
     public static DownloadServiceDelegate getDownloadServiceDelegate() {
         return new OfflinePageDownloadBridge(Profile.getLastUsedProfile());
     }
@@ skipping 199 matching lines @@
             long nativeOfflinePageDownloadBridge, List<OfflinePageDownloadItem> items);
     native OfflinePageDownloadItem nativeGetItemByGuid(
             long nativeOfflinePageDownloadBridge, String guid);
     native void nativeCancelDownload(long nativeOfflinePageDownloadBridge, String guid);
     native void nativePauseDownload(long nativeOfflinePageDownloadBridge, String guid);
     native void nativeResumeDownload(long nativeOfflinePageDownloadBridge, String guid);
     native void nativeDeleteItemByGuid(long nativeOfflinePageDownloadBridge, String guid);
     native long nativeGetOfflineIdByGuid(long nativeOfflinePageDownloadBridge, String guid);
     native void nativeStartDownload(long nativeOfflinePageDownloadBridge, Tab tab);
 }