Convert JsonWriter::Write to taking a const ref for the in-param

chrome/test/chromedriver/chrome/log.cc

Index: chrome/test/chromedriver/chrome/log.cc
diff --git a/chrome/test/chromedriver/chrome/log.cc b/chrome/test/chromedriver/chrome/log.cc
index a40f9b2d786ff954ec6914bb50ccc36264155624..ed1190a1ca3f93970cc4708040f516ab2683dd45 100644
--- a/chrome/test/chromedriver/chrome/log.cc
+++ b/chrome/test/chromedriver/chrome/log.cc
@@ -85,7 +85,7 @@ bool IsVLogOn(int vlog_level) {
 std::string PrettyPrintValue(const base::Value& value) {
   std::string json;
   base::JSONWriter::WriteWithOptions(
-      &value, base::JSONWriter::OPTIONS_PRETTY_PRINT, &json);
+      value, base::JSONWriter::OPTIONS_PRETTY_PRINT, &json);
 #if defined(OS_WIN)
   base::RemoveChars(json, "\r", &json);
 #endif