Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/media/remote/MediaRouteChooserDialogFactory.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.media.remote;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.Context;
 import android.content.DialogInterface;
@@ skipping 55 matching lines @@
     /**
      * A dialog fragment for choosing a media route that saves system visibility for handling
      * fullscreen state of Chrome correctly. Needs to be a named public static class, see
      * https://crbug.com/618993.
      */
     public static final class Fragment extends MediaRouteChooserDialogFragment {
         final Handler mHandler = new Handler();
         final MediaRouteController mController;
         final MediaStateListener mPlayer;
         final SystemVisibilitySaver mVisibilitySaver = new SystemVisibilitySaver();
-        boolean mCancelled = false;
-        Context mContext = null;
+        boolean mCancelled;
+        Context mContext;
 
         // The class has to be a public static class with a zero-argument constructor.
         // Since we can't pass any callbacks to the fragment easily, just close the dialog.
         // See https://crbug.com/618993.
         public Fragment() {
             mHandler.post(new Runnable() {
                 @Override
                 public void run() {
                     Fragment.this.dismiss();
                 }
@@ skipping 43 matching lines @@
                 mController.onRouteSelected(mPlayer, router, router.getSelectedRoute());
             }
         }
     }
 
     @Override
     public MediaRouteChooserDialogFragment onCreateChooserDialogFragment() {
         return new Fragment(mController, mPlayer);
     }
 }