Android: Remove GetApplicationContext part 4

services/device/time_zone_monitor/android/java/src/org/chromium/device/time_zone_monitor/TimeZoneMonitor.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.device.time_zone_monitor;
 
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 
+import org.chromium.base.ContextUtils;
 import org.chromium.base.Log;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 
 /**
  * Android implementation details for device::TimeZoneMonitorAndroid.
  */
 @JNINamespace("device")
 class TimeZoneMonitor {
     private static final String TAG = "cr_TimeZoneMonitor";
 
-    private final Context mAppContext;
     private final IntentFilter mFilter = new IntentFilter(Intent.ACTION_TIMEZONE_CHANGED);
     private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             if (!intent.getAction().equals(Intent.ACTION_TIMEZONE_CHANGED)) {
                 Log.e(TAG, "unexpected intent");
                 return;
             }
 
             nativeTimeZoneChangedFromJava(mNativePtr);
         }
     };
 
     private long mNativePtr;
 
     /**
      * Start listening for intents.
      * @param nativePtr The native device::TimeZoneMonitorAndroid to notify of time zone changes.
      */
-    private TimeZoneMonitor(Context context, long nativePtr) {
-        mAppContext = context.getApplicationContext();
+    private TimeZoneMonitor(long nativePtr) {
         mNativePtr = nativePtr;
-        mAppContext.registerReceiver(mBroadcastReceiver, mFilter);
+        ContextUtils.getApplicationContext().registerReceiver(mBroadcastReceiver, mFilter);
     }
 
     @CalledByNative
-    static TimeZoneMonitor getInstance(Context context, long nativePtr) {
-        return new TimeZoneMonitor(context, nativePtr);
+    static TimeZoneMonitor getInstance(long nativePtr) {
+        return new TimeZoneMonitor(nativePtr);
     }
 
     /**
      * Stop listening for intents.
      */
     @CalledByNative
     void stop() {
-        mAppContext.unregisterReceiver(mBroadcastReceiver);
+        ContextUtils.getApplicationContext().unregisterReceiver(mBroadcastReceiver);
         mNativePtr = 0;
     }
 
     /**
      * Native JNI call to device::TimeZoneMonitorAndroid::TimeZoneChanged.
      * See device/time_zone_monitor/time_zone_monitor_android.cc.
      */
     private native void nativeTimeZoneChangedFromJava(long nativeTimeZoneMonitorAndroid);
 }