Remove redundant field initialization in Java code.

android_webview/java/src/org/chromium/android_webview/AwContentsClientCallbackHelper.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.android_webview;
 
 import android.graphics.Picture;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
@@ skipping 106 matching lines @@
     private static final int MSG_ON_PAGE_FINISHED = 9;
     private static final int MSG_ON_RECEIVED_TITLE = 10;
     private static final int MSG_ON_PROGRESS_CHANGED = 11;
     private static final int MSG_SYNTHESIZE_PAGE_LOADING = 12;
     private static final int MSG_DO_UPDATE_VISITED_HISTORY = 13;
     private static final int MSG_ON_FORM_RESUBMISSION = 14;
 
     // Minimum period allowed between consecutive onNewPicture calls, to rate-limit the callbacks.
     private static final long ON_NEW_PICTURE_MIN_PERIOD_MILLIS = 500;
     // Timestamp of the most recent onNewPicture callback.
-    private long mLastPictureTime = 0;
+    private long mLastPictureTime;
     // True when a onNewPicture callback is currenly in flight.
-    private boolean mHasPendingOnNewPicture = false;
+    private boolean mHasPendingOnNewPicture;
 
     private final AwContentsClient mContentsClient;
 
     private final Handler mHandler;
 
     private CancelCallbackPoller mCancelCallbackPoller;
 
     private class MyHandler extends Handler {
         private MyHandler(Looper looper) {
             super(looper);
@@ skipping 179 matching lines @@
 
     public void postOnFormResubmission(Message dontResend, Message resend) {
         OnFormResubmissionInfo info = new OnFormResubmissionInfo(dontResend, resend);
         mHandler.sendMessage(mHandler.obtainMessage(MSG_ON_FORM_RESUBMISSION, info));
     }
 
     void removeCallbacksAndMessages() {
         mHandler.removeCallbacksAndMessages(null);
     }
 }