Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/signin/OAuth2TokenService.java

 // Copyright 2013 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.signin;
 
 import android.accounts.Account;
 import android.content.Context;
 import android.os.StrictMode;
 import android.util.Log;
@@ skipping 33 matching lines @@
      * implement this interface and register with {@link #addObserver}.
      */
     public interface OAuth2TokenServiceObserver {
         void onRefreshTokenAvailable(Account account);
         void onRefreshTokenRevoked(Account account);
         void onRefreshTokensLoaded();
     }
 
     private static final String OAUTH2_SCOPE_PREFIX = "oauth2:";
 
-    private Context mPendingValidationContext = null;
-    private boolean mPendingValidationForceNotifications = false;
+    private Context mPendingValidationContext;
+    private boolean mPendingValidationForceNotifications;
 
     private final long mNativeOAuth2TokenServiceDelegateAndroid;
     private final ObserverList<OAuth2TokenServiceObserver> mObservers;
 
     private OAuth2TokenService(Context context, long nativeOAuth2Service) {
         mNativeOAuth2TokenServiceDelegateAndroid = nativeOAuth2Service;
         mObservers = new ObserverList<OAuth2TokenServiceObserver>();
         AccountTrackerService.get(context).addSystemAccountsSeededListener(this);
     }
 
@@ skipping 319 matching lines @@
             String authToken, boolean isTransientError, long nativeCallback);
     private native void nativeValidateAccounts(long nativeOAuth2TokenServiceDelegateAndroid,
             String currentlySignedInAccount, boolean forceNotifications);
     private native void nativeFireRefreshTokenAvailableFromJava(
             long nativeOAuth2TokenServiceDelegateAndroid, String accountName);
     private native void nativeFireRefreshTokenRevokedFromJava(
             long nativeOAuth2TokenServiceDelegateAndroid, String accountName);
     private native void nativeFireRefreshTokensLoadedFromJava(
             long nativeOAuth2TokenServiceDelegateAndroid);
 }