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

This patch updates the code to prevent auto deducing to a raw pointer.

R=dsinclair, jochen
BUG=554600

Review-Url: https://codereview.chromium.org/2184913006
Cr-Commit-Position: refs/heads/master@{#408718}

chrome/common/chrome_content_client.cc

@@ -502,7 +502,7 @@ content::PepperPluginInfo* ChromeContentClient::FindMostRecentPlugin(
 
   std::map<PluginSortKey, content::PepperPluginInfo*> plugin_map;
 
-  for (const auto& plugin : plugins) {
+  for (auto* plugin : plugins) {
     Version version(plugin->version);
     DCHECK(version.IsValid());
     plugin_map[PluginSortKey(version, plugin->is_debug,

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;
     }