Add missing using statements for JNI types.

media/midi/midi_input_port_android.cc

 // 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.
 
 #include "media/midi/midi_input_port_android.h"
 
 #include "base/android/jni_array.h"
 #include "base/time/time.h"
 #include "jni/MidiInputPortAndroid_jni.h"
 
+using base::android::JavaParamRef;
+
 namespace media {
 namespace midi {
 
 MidiInputPortAndroid::MidiInputPortAndroid(JNIEnv* env,
                                            jobject raw,
                                            Delegate* delegate)
     : raw_port_(env, raw), delegate_(delegate) {}
 
 MidiInputPortAndroid::~MidiInputPortAndroid() {
   Close();
@@ skipping 29 matching lines @@
       timestamp / base::TimeTicks::kNanosecondsPerMicrosecond);
   delegate_->OnReceivedData(this, &bytes[offset], size, timestamp_to_pass);
 }
 
 bool MidiInputPortAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace midi
 }  // namespace media