Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/webapps/AddToHomescreenDialog.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.webapps;
 
 import android.app.Activity;
 import android.content.DialogInterface;
 import android.graphics.Bitmap;
 import android.support.v7.app.AlertDialog;
@@ skipping 16 matching lines @@
     private View mProgressBarView;
     private ImageView mIconView;
     private EditText mInput;
 
     private AddToHomescreenManager mManager;
 
     /**
      * Whether {@link mManager} is ready for {@link AddToHomescreenManager#addShortcut()} to be
      * called.
      */
-    private boolean mIsReadyToAdd = false;
+    private boolean mIsReadyToAdd;
 
     public AddToHomescreenDialog(AddToHomescreenManager manager) {
         mManager = manager;
     }
 
     @VisibleForTesting
     public AlertDialog getAlertDialogForTesting() {
         return mDialog;
     }
 
@@ skipping 111 matching lines @@
     }
 
     /**
      * Updates whether the dialog's OK button is enabled.
      */
     public void updateAddButtonEnabledState() {
         boolean enable = mIsReadyToAdd && !TextUtils.isEmpty(mInput.getText());
         mDialog.getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(enable);
     }
 }