Add missing using statements for JNI types.

content/browser/device_sensors/sensor_manager_android.cc

 // 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.
 
 #include "content/browser/device_sensors/sensor_manager_android.h"
 
 #include <string.h>
 
 #include "base/android/context_utils.h"
 #include "base/android/jni_android.h"
 #include "base/bind.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
 #include "content/public/browser/browser_thread.h"
 #include "jni/DeviceSensors_jni.h"
 
 using base::android::AttachCurrentThread;
+using base::android::JavaParamRef;
 
 namespace {
 
 void UpdateDeviceOrientationHistogram(
     content::SensorManagerAndroid::OrientationSensorType type) {
   UMA_HISTOGRAM_ENUMERATION("InertialSensor.DeviceOrientationSensorAndroid",
       type, content::SensorManagerAndroid::ORIENTATION_SENSOR_MAX);
 }
 
 void SetOrientation(content::DeviceOrientationHardwareBuffer* buffer,
@@ skipping 514 matching lines @@
     }
   }
 }
 
 void SensorManagerAndroid::Shutdown() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   is_shutdown_ = true;
 }
 
 }  // namespace content