components: Change auto to not deduce raw pointers.

components/cronet/ios/Cronet.mm

 // Copyright 2016 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.
 
 #import "components/cronet/ios/Cronet.h"
 
 #include <memory>
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 52 matching lines @@
 
 + (void)startInternal {
   cronet::CronetEnvironment::Initialize();
   std::string partialUserAgent = base::SysNSStringToUTF8(gUserAgent);
   gChromeNet.Get().reset(new cronet::CronetEnvironment(partialUserAgent));
 
   gChromeNet.Get()->set_http2_enabled(gHttp2Enabled);
   gChromeNet.Get()->set_quic_enabled(gQuicEnabled);
   gChromeNet.Get()->set_ssl_key_log_file_name(
       base::SysNSStringToUTF8(gSslKeyLogFileName));
-  for (const auto& quicHint : gQuicHints) {
+  for (const auto* quicHint : gQuicHints) {
     gChromeNet.Get()->AddQuicHint(quicHint->host, quicHint->port,
                                   quicHint->alternate_port);
   }
   gChromeNet.Get()->Start();
 }
 
 + (void)start {
   static dispatch_once_t onceToken;
   dispatch_once(&onceToken, ^{
     if (![NSThread isMainThread]) {
@@ skipping 37 matching lines @@
   return nil;
 }
 
 // This is a non-public dummy method that prevents the linker from stripping out
 // the otherwise non-referenced methods from 'cronet_bidirectional_stream.cc'.
 + (void)preventStrippingCronetBidirectionalStream {
   cronet_bidirectional_stream_create(NULL, 0, 0);
 }
 
 @end