Remove now-unnecessary .obj() in Java method calls.

media/midi/midi_input_port_android.cc

Index: media/midi/midi_input_port_android.cc
diff --git a/media/midi/midi_input_port_android.cc b/media/midi/midi_input_port_android.cc
index 3389c0241530930fcc6d14f80c804b2584b37214..59b355ae1d638e993e2ad20cef7c839685530419 100644
--- a/media/midi/midi_input_port_android.cc
+++ b/media/midi/midi_input_port_android.cc
@@ -24,13 +24,13 @@ MidiInputPortAndroid::~MidiInputPortAndroid() {
 
 bool MidiInputPortAndroid::Open() {
   JNIEnv* env = base::android::AttachCurrentThread();
-  return Java_MidiInputPortAndroid_open(env, raw_port_.obj(),
+  return Java_MidiInputPortAndroid_open(env, raw_port_,
                                         reinterpret_cast<jlong>(this));
 }
 
 void MidiInputPortAndroid::Close() {
   JNIEnv* env = base::android::AttachCurrentThread();
-  Java_MidiInputPortAndroid_close(env, raw_port_.obj());
+  Java_MidiInputPortAndroid_close(env, raw_port_);
 }
 
 void MidiInputPortAndroid::OnData(JNIEnv* env,