Refactor Pickle Read methods to use higher performance PickleIterator.

net/base/x509_certificate.h

Index: net/base/x509_certificate.h
diff --git a/net/base/x509_certificate.h b/net/base/x509_certificate.h
index 0a603b1ad9219d8adcb7cf7b10ae3f6ebdcab7f0..9e00e71b2c3a150dee425604daa998c366790aec 100644
--- a/net/base/x509_certificate.h
+++ b/net/base/x509_certificate.h
@@ -37,6 +37,7 @@ struct CERTCertificateStr;
 #endif
 
 class Pickle;
+class PickleIterator;
 
 namespace crypto {
 class RSAPrivateKey;
@@ -181,7 +182,7 @@ class NET_EXPORT X509Certificate
   //
   // The returned pointer must be stored in a scoped_refptr<X509Certificate>.
   static X509Certificate* CreateFromPickle(const Pickle& pickle,
-                                           void** pickle_iter,
+                                           PickleIterator* pickle_iter,
                                            PickleType type);
 
   // Parses all of the certificates possible from |data|. |format| is a
@@ -554,7 +555,7 @@ class NET_EXPORT X509Certificate
   // libraries, nor acceptable to CreateFromBytes(). Returns an invalid
   // handle, NULL, on failure.
   static OSCertHandle ReadOSCertHandleFromPickle(const Pickle& pickle,
-                                                 void** pickle_iter);
+                                                 PickleIterator* pickle_iter);
 
   // Writes a single certificate to |pickle|. Returns false on failure.
   static bool WriteOSCertHandleToPickle(OSCertHandle handle, Pickle* pickle);