jni: Pass method parameters as JavaParamRef in content.

content/browser/time_zone_monitor_android.cc

Index: content/browser/time_zone_monitor_android.cc
diff --git a/content/browser/time_zone_monitor_android.cc b/content/browser/time_zone_monitor_android.cc
index 8018cf74df033dbf732ed78e86aaef9937218043..4eb777bfa3d7dc2f3b17cf10a79c4ae08e21339d 100644
--- a/content/browser/time_zone_monitor_android.cc
+++ b/content/browser/time_zone_monitor_android.cc
@@ -26,8 +26,9 @@ bool TimeZoneMonitorAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
-void TimeZoneMonitorAndroid::TimeZoneChangedFromJava(JNIEnv* env,
-                                                     jobject caller) {
+void TimeZoneMonitorAndroid::TimeZoneChangedFromJava(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& caller) {
   NotifyRenderers();
 }