jni: Pass method parameters as JavaParamRef in content.

content/browser/media/android/media_session.h

Index: content/browser/media/android/media_session.h
diff --git a/content/browser/media/android/media_session.h b/content/browser/media/android/media_session.h
index 992ad4f42e58e4fec863d8901dbf69ee33ef83bf..9ba76c35936db3e490518fec243daa8a03292981 100644
--- a/content/browser/media/android/media_session.h
+++ b/content/browser/media/android/media_session.h
@@ -62,11 +62,13 @@ class CONTENT_EXPORT MediaSession
 
   // Called when the Android system requests the MediaSession to be suspended.
   // Called by Java through JNI.
-  void OnSuspend(JNIEnv* env, jobject obj, jboolean temporary);
+  void OnSuspend(JNIEnv* env,
+                 const base::android::JavaParamRef<jobject>& obj,
+                 jboolean temporary);
 
   // Called when the Android system requests the MediaSession to be resumed.
   // Called by Java through JNI.
-  void OnResume(JNIEnv* env, jobject obj);
+  void OnResume(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
 
   // Called when the user requests resuming the session. No-op if the session is
   // not controllable.