Re-order and remove unused Java imports.

webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCProximitySensor.java

 /*
  *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 package org.appspot.apprtc;
 
+import org.appspot.apprtc.util.AppRTCUtils;
+
 import android.content.Context;
 import android.hardware.Sensor;
 import android.hardware.SensorEvent;
 import android.hardware.SensorEventListener;
 import android.hardware.SensorManager;
 import android.os.Build;
 import android.util.Log;
 
-import org.appspot.apprtc.util.AppRTCUtils;
 import org.webrtc.ThreadUtils;
 
 /**
  * AppRTCProximitySensor manages functions related to the proximity sensor in
  * the AppRTC demo.
  * On most device, the proximity sensor is implemented as a boolean-sensor.
  * It returns just two values "NEAR" or "FAR". Thresholding is done on the LUX
  * value i.e. the LUX value of the light sensor is compared with a threshold.
  * A LUX-value more than the threshold means the proximity sensor returns "FAR".
  * Anything less than the threshold value and the sensor  returns "NEAR".
@@ skipping 130 matching lines @@
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
       // Added in API level 21.
       info.append(", max delay: ").append(proximitySensor.getMaxDelay());
       info.append(", reporting mode: ").append(proximitySensor.getReportingMode());
       info.append(", isWakeUpSensor: ").append(proximitySensor.isWakeUpSensor());
     }
     Log.d(TAG, info.toString());
   }
 
 }