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

chrome/browser/android/download/chrome_download_delegate.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 "chrome/browser/android/download/chrome_download_delegate.h"
 
 #include <jni.h>
 
 #include <string>
 #include <type_traits>
@@ skipping 188 matching lines @@
 
 void ChromeDownloadDelegate::RequestFileAccess(intptr_t callback_id) {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_ChromeDownloadDelegate_requestFileAccess(
       env, java_ref_, callback_id);
 }
 
 void Init(JNIEnv* env,
           const JavaParamRef<jobject>& obj,
           const JavaParamRef<jobject>& jweb_contents) {
-  auto web_contents = WebContents::FromJavaWebContents(jweb_contents);
+  auto* web_contents = WebContents::FromJavaWebContents(jweb_contents);
   ChromeDownloadDelegate::CreateForWebContents(web_contents);
   ChromeDownloadDelegate::FromWebContents(web_contents)->SetJavaRef(env, obj);
 }
 
 bool RegisterChromeDownloadDelegate(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(ChromeDownloadDelegate);