Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.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.tabmodel;
 
 import android.app.Activity;
 import android.os.Handler;
 
 import org.chromium.base.VisibleForTesting;
@@ skipping 17 matching lines @@
 
     private final TabCreatorManager mTabCreatorManager;
 
     /** Flag set to false when the asynchronous loading of tabs is finished. */
     private final AtomicBoolean mSessionRestoreInProgress =
             new AtomicBoolean(true);
     private final TabPersistentStore mTabSaver;
 
     // This flag signifies the object has gotten an onNativeReady callback and
     // has not been destroyed.
-    private boolean mActiveState = false;
+    private boolean mActiveState;
 
     private boolean mIsUndoSupported;
 
     // Whether the Activity that owns that TabModelSelector is tabbed or not.
     // Used by sync to determine how to handle restore on cold start.
     private boolean mIsTabbedActivityForSync;
 
     private final TabModelOrderController mOrderController;
 
     private OverviewModeBehavior mOverviewModeBehavior;
@@ skipping 345 matching lines @@
     @Override
     public void notifyChanged() {
         super.notifyChanged();
     }
 
     @VisibleForTesting
     public TabPersistentStore getTabPersistentStoreForTesting() {
         return mTabSaver;
     }
 }