Remove redundant field initialization in Java code.

base/android/java/src/org/chromium/base/metrics/RecordHistogram.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.base.metrics;
 
 import org.chromium.base.VisibleForTesting;
 import org.chromium.base.annotations.JNINamespace;
 
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
 /**
  * Java API for recording UMA histograms.
  *
  * Internally, histograms objects are cached on the Java side by their pointer
  * values (converted to long). This is safe to do because C++ Histogram objects
  * are never freed. Caching them on the Java side prevents needing to do costly
  * Java String to C++ string conversions on the C++ side during lookup.
  *
  * Note: the JNI calls are relatively costly - avoid calling these methods in performance-critical
  * code.
  */
 @JNINamespace("base::android")
 public class RecordHistogram {
-    private static boolean sIsDisabledForTests = false;
+    private static boolean sIsDisabledForTests;
     private static Map<String, Long> sCache =
             Collections.synchronizedMap(new HashMap<String, Long>());
 
     /**
      * Tests may not have native initialized, so they may need to disable metrics.
      */
     @VisibleForTesting
     public static void disableForTests() {
         sIsDisabledForTests = true;
     }
@@ skipping 239 matching lines @@
             String name, long key, int sample, int boundary);
     private static native long nativeRecordCustomCountHistogram(
             String name, long key, int sample, int min, int max, int numBuckets);
     private static native long nativeRecordLinearCountHistogram(
             String name, long key, int sample, int min, int max, int numBuckets);
     private static native long nativeRecordSparseHistogram(String name, long key, int sample);
 
     private static native int nativeGetHistogramValueCountForTesting(String name, int sample);
     private static native void nativeInitialize();
 }