Add missing using statements for JNI types.

media/midi/midi_output_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_output_port_android.h"
 
 #include "base/android/jni_array.h"
 #include "jni/MidiOutputPortAndroid_jni.h"
 
+using base::android::ScopedJavaLocalRef;
+
 namespace media {
 namespace midi {
 
 MidiOutputPortAndroid::MidiOutputPortAndroid(JNIEnv* env, jobject raw)
     : raw_port_(env, raw) {}
 MidiOutputPortAndroid::~MidiOutputPortAndroid() {
   Close();
 }
 
 bool MidiOutputPortAndroid::Open() {
@@ skipping 13 matching lines @@
 
   JNIEnv* env = base::android::AttachCurrentThread();
   ScopedJavaLocalRef<jbyteArray> data_to_pass =
       base::android::ToJavaByteArray(env, &data[0], data.size());
 
   Java_MidiOutputPortAndroid_send(env, raw_port_.obj(), data_to_pass.obj());
 }
 
 }  // namespace midi
 }  // namespace media