components: Change auto to not deduce raw pointers.

components/ntp_snippets/ntp_snippet.cc

 // Copyright 2015 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 "components/ntp_snippets/ntp_snippet.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
@@ skipping 130 matching lines @@
     const base::DictionaryValue& dict) {
   const base::ListValue* id_list;
   std::string id;
   if (!(dict.GetList("id", &id_list) &&
         id_list->GetString(0, &id))) {  // TODO(sfiera): multiple IDs
     return nullptr;
   }
 
   auto snippet = base::MakeUnique<NTPSnippet>(id);
   snippet->sources_.emplace_back(GURL(), std::string(), GURL());
-  auto source = &snippet->sources_.back();
+  auto* source = &snippet->sources_.back();
   snippet->best_source_index_ = 0;
 
   if (!(dict.GetString("title", &snippet->title_) &&
         dict.GetString("summaryText", &snippet->snippet_) &&
         GetTimeValue(dict, "publishTime", &snippet->publish_date_) &&
         GetTimeValue(dict, "expirationTime", &snippet->expiry_date_) &&
         GetURLValue(dict, "imageUrl", &snippet->salient_image_url_) &&
         dict.GetString("publisherName", &source->publisher_name) &&
         GetURLValue(dict, "fullPageUrl", &source->url))) {
     return nullptr;
@@ skipping 114 matching lines @@
       best_source_index_ = i;
       if (!source.amp_url.is_empty()) {
         // This is the best possible source, stop looking.
         break;
       }
     }
   }
 }
 
 }  // namespace ntp_snippets