Change most uses of Pickle to base::Pickle

net/cert/x509_certificate_mac.cc

Index: net/cert/x509_certificate_mac.cc
diff --git a/net/cert/x509_certificate_mac.cc b/net/cert/x509_certificate_mac.cc
index c02f33b123d92d31dd3d40ba424cf2b773cab98a..5f1d58f5a0c22492e005d5379e700420e44c062f 100644
--- a/net/cert/x509_certificate_mac.cc
+++ b/net/cert/x509_certificate_mac.cc
@@ -464,8 +464,8 @@ CFMutableArrayRef X509Certificate::CreateOSCertChainForCert() const {
 }
 
 // static
-X509Certificate::OSCertHandle
-X509Certificate::ReadOSCertHandleFromPickle(PickleIterator* pickle_iter) {
+X509Certificate::OSCertHandle X509Certificate::ReadOSCertHandleFromPickle(
+    base::PickleIterator* pickle_iter) {
   const char* data;
   int length;
   if (!pickle_iter->ReadData(&data, &length))
@@ -476,7 +476,7 @@ X509Certificate::ReadOSCertHandleFromPickle(PickleIterator* pickle_iter) {
 
 // static
 bool X509Certificate::WriteOSCertHandleToPickle(OSCertHandle cert_handle,
-                                                Pickle* pickle) {
+                                                base::Pickle* pickle) {
   CSSM_DATA cert_data;
   OSStatus status = SecCertificateGetData(cert_handle, &cert_data);
   if (status)