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

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/dial/dial_registry.h"
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
@@ skipping 139 matching lines @@
   repeating_timer_.Stop();
   dial_->RemoveObserver(this);
   ClearDialService();
 }
 
 bool DialRegistry::PruneExpiredDevices() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   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 =
           device_by_id_map_.erase(device->device_id());
       DCHECK_EQ(1U, num_erased_by_id);
       device_by_label_map_.erase(it++);
       pruned_device = true;
     } else {
       ++it;
     }
@@ skipping 154 matching lines @@
     case NetworkChangeNotifier::CONNECTION_BLUETOOTH:
       if (!dial_) {
         VLOG(2) << "Connection detected, restarting discovery.";
         StartPeriodicDiscovery();
       }
       break;
   }
 }
 
 }  // namespace extensions