jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/feature_utilities.cc

Index: chrome/browser/android/feature_utilities.cc
diff --git a/chrome/browser/android/feature_utilities.cc b/chrome/browser/android/feature_utilities.cc
index 4757d7e44e33a102cc1659ac9d52d2bdb4549ff8..23111c678d8a819788aecff9e007fa7b2c1cbbcb 100644
--- a/chrome/browser/android/feature_utilities.cc
+++ b/chrome/browser/android/feature_utilities.cc
@@ -27,15 +27,14 @@ CustomTabsVisibilityHistogram GetCustomTabsVisibleValue() {
 } // namespace android
 } // namespace chrome
 
-
 static void SetDocumentModeEnabled(JNIEnv* env,
-                                   jclass clazz,
+                                   const JavaParamRef<jclass>& clazz,
                                    jboolean enabled) {
   document_mode_enabled = enabled;
 }
 
 static void SetCustomTabVisible(JNIEnv* env,
-                                jclass clazz,
+                                const JavaParamRef<jclass>& clazz,
                                 jboolean visible) {
   custom_tab_visible = visible;
 }