jni_generator: Pass object parameters as JavaParamRef.

content/browser/android/content_video_view.cc

Index: content/browser/android/content_video_view.cc
diff --git a/content/browser/android/content_video_view.cc b/content/browser/android/content_video_view.cc
index ef5369e80e4a01426d3a4147afe5e9783dd6e811..8a9eb4298b10848f5ef4681a1de12d339c415a08 100644
--- a/content/browser/android/content_video_view.cc
+++ b/content/browser/android/content_video_view.cc
@@ -31,8 +31,9 @@ ContentVideoView* g_content_video_view = NULL;
 
 }  // namespace
 
-static ScopedJavaLocalRef<jobject> GetSingletonJavaContentVideoView(JNIEnv* env,
-                                                                    jclass) {
+static ScopedJavaLocalRef<jobject> GetSingletonJavaContentVideoView(
+    JNIEnv* env,
+    const JavaParamRef<jclass>&) {
   if (g_content_video_view)
     return g_content_video_view->GetJavaObject(env);
   else