Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/metrics/UmaSessionStats.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.metrics;
 
 import android.content.ComponentCallbacks;
 import android.content.Context;
 import android.content.res.Configuration;
 
 import org.chromium.base.ContextUtils;
 import org.chromium.chrome.browser.preferences.privacy.PrivacyPreferencesManager;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModel;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
 import org.chromium.chrome.browser.tabmodel.TabModelSelectorTabObserver;
 import org.chromium.content_public.browser.WebContents;
 
 /**
  * Mainly sets up session stats for chrome. A session is defined as the duration when the
  * application is in the foreground.  Also used to communicate information between Chrome
  * and the framework's MetricService.
  */
 public class UmaSessionStats {
     public static final String LAST_USED_TIME_PREF = "umasessionstats.lastusedtime";
 
     private static final String SAMSUNG_MULTWINDOW_PACKAGE = "com.sec.feature.multiwindow";
 
-    private static long sNativeUmaSessionStats = 0;
+    private static long sNativeUmaSessionStats;
 
     // TabModelSelector is needed to get the count of open tabs. We want to log the number of open
     // tabs on every page load.
     private TabModelSelector mTabModelSelector;
     private TabModelSelectorTabObserver mTabModelSelectorTabObserver;
 
     private final Context mContext;
     private final boolean mIsMultiWindowCapable;
     private ComponentCallbacks mComponentCallbacks;
 
-    private boolean mKeyboardConnected = false;
+    private boolean mKeyboardConnected;
 
     public UmaSessionStats(Context context) {
         mContext = context;
         mIsMultiWindowCapable = context.getPackageManager().hasSystemFeature(
                 SAMSUNG_MULTWINDOW_PACKAGE);
     }
 
     private void recordPageLoadStats(Tab tab) {
         WebContents webContents = tab.getWebContents();
         boolean isDesktopUserAgent = webContents != null
@@ skipping 156 matching lines @@
     private static native void nativeRegisterExternalExperiment(
             String studyName, int[] experimentIds);
     private static native void nativeRegisterSyntheticFieldTrial(
             String trialName, String groupName);
     private static native void nativeRecordMultiWindowSession(int areaPercent, int instanceCount);
     private static native void nativeRecordTabCountPerLoad(int numTabsOpen);
     private static native void nativeRecordPageLoaded(boolean isDesktopUserAgent);
     private static native void nativeRecordPageLoadedWithKeyboard();
 
 }