Revert of jni_generator: Make all object-returning natives return ScopedJavaLocalRef.

chrome/browser/ui/android/javascript_app_modal_dialog_android.cc

Index: chrome/browser/ui/android/javascript_app_modal_dialog_android.cc
diff --git a/chrome/browser/ui/android/javascript_app_modal_dialog_android.cc b/chrome/browser/ui/android/javascript_app_modal_dialog_android.cc
index 7b62d8bd2194d4e546cb11a62934faf2cad2975d..bf08bc53ee02d419c984a9e8e1f18d6fb65f999b 100644
--- a/chrome/browser/ui/android/javascript_app_modal_dialog_android.cc
+++ b/chrome/browser/ui/android/javascript_app_modal_dialog_android.cc
@@ -136,15 +136,15 @@
 }
 
 // static
-ScopedJavaLocalRef<jobject> GetCurrentModalDialog(JNIEnv* env, jclass clazz) {
+jobject GetCurrentModalDialog(JNIEnv* env, jclass clazz) {
   app_modal::AppModalDialog* dialog =
       app_modal::AppModalDialogQueue::GetInstance()->active_dialog();
   if (!dialog || !dialog->native_dialog())
-    return ScopedJavaLocalRef<jobject>();
+    return NULL;
 
   JavascriptAppModalDialogAndroid* js_dialog =
       static_cast<JavascriptAppModalDialogAndroid*>(dialog->native_dialog());
-  return ScopedJavaLocalRef<jobject>(js_dialog->GetDialogObject());
+  return js_dialog->GetDialogObject().obj();
 }
 
 // static