Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/ntp/RecentTabsExpandableListView.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.ntp;
 
 import android.content.Context;
 import android.util.AttributeSet;
 import android.view.View;
 import android.widget.ExpandableListView;
 
 import org.chromium.ui.base.DeviceFormFactor;
 
 /**
  * Customized ExpandableListView for the recent tabs page. This class handles tablet-specific
  * layout implementation.
  */
 public class RecentTabsExpandableListView extends ExpandableListView {
     private static final int MAX_LIST_VIEW_WIDTH_DP = 550;
 
     private int mMaxListViewWidth;
-    private int mSavedListPosition = 0;
-    private int mSavedListTop = 0;
+    private int mSavedListPosition;
+    private int mSavedListTop;
 
     /**
      * Constructor for inflating from XML.
      */
     public RecentTabsExpandableListView(Context context, AttributeSet attrs) {
         super(context, attrs);
     }
 
     @Override
     protected void onFinishInflate() {
@@ skipping 29 matching lines @@
     }
 
     @Override
     protected void onDetachedFromWindow() {
         mSavedListPosition = getFirstVisiblePosition();
         View v = getChildAt(0);
         mSavedListTop = (v == null) ? 0 : v.getTop();
         super.onDetachedFromWindow();
     }
 }