Remove redundant field initialization in Java code.

chrome/test/android/javatests/src/org/chromium/chrome/test/ChromeActivityTestCaseBase.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.test;
 
 import android.app.Activity;
 import android.app.Instrumentation;
 import android.content.ComponentName;
 import android.content.Context;
@@ skipping 90 matching lines @@
     private static final String MEMORY_TRACE_GRAPH_SUFFIX = " - browser PSS";
 
     private static final String PERF_OUTPUT_FILE = "PerfTestData.txt";
 
     private static final long OMNIBOX_FIND_SUGGESTION_TIMEOUT_MS = 10 * 1000;
 
     public ChromeActivityTestCaseBase(Class<T> activityClass) {
         super(activityClass);
     }
 
-    protected boolean mSkipClearAppData = false;
+    protected boolean mSkipClearAppData;
 
     private Thread.UncaughtExceptionHandler mDefaultUncaughtExceptionHandler;
 
     private class ChromeUncaughtExceptionHandler implements Thread.UncaughtExceptionHandler {
         @Override
         public void uncaughtException(Thread t, Throwable e) {
             String stackTrace = Log.getStackTraceString(e);
             if (e.getClass().getName().endsWith("StrictModeViolation")) {
                 stackTrace += "\nSearch logcat for \"StrictMode policy violation\" for full stack.";
             }
@@ skipping 732 matching lines @@
                     PerfTraceEvent.setEnabled(false);
                 }
 
                 System.out.println(perfTagAnalysisString);
             }
         } catch (NoSuchMethodException ex) {
             // Eat exception here.
         }
     }
 }