Refactor Pickle Read methods to use higher performance PickleIterator.

net/base/x509_certificate_unittest.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 "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/pickle.h"
 #include "base/sha1.h"
 #include "base/string_number_conversions.h"
@@ skipping 1025 matching lines @@
   scoped_refptr<X509Certificate> cert = X509Certificate::CreateFromHandle(
       google_cert_handle, intermediates);
   ASSERT_NE(static_cast<X509Certificate*>(NULL), cert.get());
 
   X509Certificate::FreeOSCertHandle(google_cert_handle);
   X509Certificate::FreeOSCertHandle(thawte_cert_handle);
 
   Pickle pickle;
   cert->Persist(&pickle);
 
-  void* iter = NULL;
+  PickleReader iter(pickle);
   scoped_refptr<X509Certificate> cert_from_pickle =
       X509Certificate::CreateFromPickle(
           pickle, &iter, X509Certificate::PICKLETYPE_CERTIFICATE_CHAIN);
   ASSERT_NE(static_cast<X509Certificate*>(NULL), cert_from_pickle);
   EXPECT_TRUE(X509Certificate::IsSameOSCert(
       cert->os_cert_handle(), cert_from_pickle->os_cert_handle()));
   const X509Certificate::OSCertHandles& cert_intermediates =
       cert->GetIntermediateCertificates();
   const X509Certificate::OSCertHandles& pickle_intermediates =
       cert_from_pickle->GetIntermediateCertificates();
@@ skipping 982 matching lines @@
 #define MAYBE_VerifyMixed DISABLED_VerifyMixed
 #else
 #define MAYBE_VerifyMixed VerifyMixed
 #endif
 WRAPPED_INSTANTIATE_TEST_CASE_P(
     MAYBE_VerifyMixed,
     X509CertificateWeakDigestTest,
     testing::ValuesIn(kVerifyMixedTestData));
 
 }  // namespace net