Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/util/FeatureUtilities.java

 // Copyright 2014 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.util;
 
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.Intent;
@@ skipping 36 matching lines @@
     private static final String HERB_EXPERIMENT_FLAVOR_PARAM = "type";
 
     private static Boolean sHasGoogleAccountAuthenticator;
     private static Boolean sHasRecognitionIntentHandler;
     private static Boolean sChromeHomeEnabled;
 
     private static String sCachedHerbFlavor;
     private static boolean sIsHerbFlavorCached;
 
     /** Used to track if cached command line flags should be refreshed. */
-    private static CommandLine.ResetListener sResetListener = null;
+    private static CommandLine.ResetListener sResetListener;
 
     /**
      * Determines whether or not the {@link RecognizerIntent#ACTION_WEB_SEARCH} {@link Intent}
      * is handled by any {@link android.app.Activity}s in the system.  The result will be cached for
      * future calls.  Passing {@code false} to {@code useCachedValue} will force it to re-query any
      * {@link android.app.Activity}s that can process the {@link Intent}.
      * @param context        The {@link Context} to use to check to see if the {@link Intent} will
      *                       be handled.
      * @param useCachedValue Whether or not to use the cached value from a previous result.
      * @return {@code true} if recognition is supported.  {@code false} otherwise.
@@ skipping 197 matching lines @@
                     ChromePreferenceManager.getInstance(ContextUtils.getApplicationContext());
             sChromeHomeEnabled = manager.isChromeHomeEnabled();
         }
 
         return sChromeHomeEnabled;
     }
 
     private static native void nativeSetCustomTabVisible(boolean visible);
     private static native void nativeSetIsInMultiWindowMode(boolean isInMultiWindowMode);
 }