chrome/common: Change auto to not deduce raw pointers.

chrome/common/trace_event_args_whitelist.cc

Index: chrome/common/trace_event_args_whitelist.cc
diff --git a/chrome/common/trace_event_args_whitelist.cc b/chrome/common/trace_event_args_whitelist.cc
index d107eaa7ee08fb44c66c49454bf173e7738825d9..616ec12042dda323bb1aab1ee0de2fa6c5d71028 100644
--- a/chrome/common/trace_event_args_whitelist.cc
+++ b/chrome/common/trace_event_args_whitelist.cc
@@ -89,7 +89,7 @@ bool IsTraceEventArgsWhitelisted(
 }
 
 bool IsMetadataWhitelisted(const std::string& metadata_name) {
-  for (auto key : kMetadataWhitelist) {
+  for (auto* key : kMetadataWhitelist) {
     if (base::MatchPattern(metadata_name, key)) {
       return true;
     }