chrome/browser/extensions: Change auto to not deduce raw pointers.

chrome/browser/extensions/api/dial/dial_registry.cc

Index: chrome/browser/extensions/api/dial/dial_registry.cc
diff --git a/chrome/browser/extensions/api/dial/dial_registry.cc b/chrome/browser/extensions/api/dial/dial_registry.cc
index 9dc6318c31e858b7658a5466b2c1211f501d7fa7..6444f0c820feec8e1c2c7238952d641f8e130c93 100644
--- a/chrome/browser/extensions/api/dial/dial_registry.cc
+++ b/chrome/browser/extensions/api/dial/dial_registry.cc
@@ -157,7 +157,7 @@ bool DialRegistry::PruneExpiredDevices() {
   bool pruned_device = false;
   DeviceByLabelMap::iterator it = device_by_label_map_.begin();
   while (it != device_by_label_map_.end()) {
-    const auto& device = it->second;
+    auto* device = it->second;
     if (IsDeviceExpired(*device)) {
       VLOG(2) << "Device " << device->label() << " expired, removing";
       const size_t num_erased_by_id =