components: Change auto to not deduce raw pointers.

components/update_client/update_engine.cc

Index: components/update_client/update_engine.cc
diff --git a/components/update_client/update_engine.cc b/components/update_client/update_engine.cc
index e356e99b7f708126264fee18c576100824091d0b..106e2c2cd2bd7211b39e7b865045d1dc01898247 100644
--- a/components/update_client/update_engine.cc
+++ b/components/update_client/update_engine.cc
@@ -66,7 +66,7 @@ UpdateEngine::~UpdateEngine() {
 bool UpdateEngine::GetUpdateState(const std::string& id,
                                   CrxUpdateItem* update_item) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  for (const auto& context : update_contexts_) {
+  for (const auto* context : update_contexts_) {
     const auto& update_items = context->update_items;
     const auto it = std::find_if(update_items.begin(), update_items.end(),
                                  [id](const CrxUpdateItem* update_item) {