Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/preferences/website/SingleCategoryPreferences.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.preferences.website;
 
 import android.content.DialogInterface;
 import android.content.res.Resources;
 import android.os.Bundle;
 import android.preference.Preference;
@@ skipping 60 matching lines @@
     private TextView mEmptyView;
     // The view for searching the list of items.
     private SearchView mSearchView;
     // The clear button displayed in the Storage view.
     private Button mClearButton;
     // The Site Settings Category we are showing.
     private SiteSettingsCategory mCategory;
     // If not blank, represents a substring to use to search for site names.
     private String mSearch = "";
     // Whether to group by allowed/blocked list.
-    private boolean mGroupByAllowBlock = false;
+    private boolean mGroupByAllowBlock;
     // Whether the Blocked list should be shown expanded.
-    private boolean mBlockListExpanded = false;
+    private boolean mBlockListExpanded;
     // Whether the Allowed list should be shown expanded.
     private boolean mAllowListExpanded = true;
     // Whether this is the first time this screen is shown.
     private boolean mIsInitialRun = true;
     // The number of sites that are on the Allowed list.
-    private int mAllowedSiteCount = 0;
+    private int mAllowedSiteCount;
     // The websites that are currently displayed to the user.
     private List<WebsitePreference> mWebsites;
 
     // Keys for individual preferences.
     public static final String READ_WRITE_TOGGLE_KEY = "read_write_toggle";
     public static final String THIRD_PARTY_COOKIES_TOGGLE_KEY = "third_party_cookies";
     public static final String NOTIFICATIONS_VIBRATE_TOGGLE_KEY = "notifications_vibrate";
     public static final String EXPLAIN_PROTECTED_MEDIA_KEY = "protected_content_learn_more";
     private static final String ADD_EXCEPTION_KEY = "add_exception";
     // Keys for Allowed/Blocked preference groups/headers.
@@ skipping 644 matching lines @@
         MediaDrmCredentialManager.resetCredentials(new MediaDrmCredentialManagerCallback() {
             @Override
             public void onCredentialResetFinished(boolean succeeded) {
                 if (succeeded) return;
                 String message = getString(R.string.protected_content_reset_failed);
                 Toast.makeText(getActivity(), message, Toast.LENGTH_SHORT).show();
             }
         });
     }
 }