Refactor Pickle Read methods to use higher performance PickleIterator.

net/socket/ssl_host_info.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 "net/socket/ssl_host_info.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/pickle.h"
 #include "base/string_piece.h"
@@ skipping 46 matching lines @@
   bool r = ParseInner(data);
   if (!r)
     state->Clear();
   return r;
 }
 
 bool SSLHostInfo::ParseInner(const std::string& data) {
   State* state = mutable_state();
 
   Pickle p(data.data(), data.size());
-  void* iter = NULL;
+  PickleIterator iter(p);
 
   int num_der_certs;
   if (!p.ReadInt(&iter, &num_der_certs) ||
       num_der_certs < 0) {
     return false;
   }
 
   for (int i = 0; i < num_der_certs; i++) {
     std::string der_cert;
     if (!p.ReadString(&iter, &der_cert))
@@ skipping 119 matching lines @@
   if (!cert_verification_callback_.is_null()) {
     CompletionCallback callback = cert_verification_callback_;
     cert_verification_callback_.Reset();
     callback.Run(rv);
   }
 }
 
 SSLHostInfoFactory::~SSLHostInfoFactory() {}
 
 }  // namespace net