Move CertVerifyProcMac unit-tests to their own file.

net/cert/cert_verify_proc_mac.h

Index: net/cert/cert_verify_proc_mac.h
diff --git a/net/cert/cert_verify_proc_mac.h b/net/cert/cert_verify_proc_mac.h
index 3c87edd7a48f5678dbff643e4be602fa971034d4..2b209a93a040a309f9e6adb83b785749c6e7a149 100644
--- a/net/cert/cert_verify_proc_mac.h
+++ b/net/cert/cert_verify_proc_mac.h
@@ -5,13 +5,14 @@
 #ifndef NET_CERT_CERT_VERIFY_PROC_MAC_H_
 #define NET_CERT_CERT_VERIFY_PROC_MAC_H_
 
+#include "net/base/net_export.h"
 #include "net/cert/cert_verify_proc.h"
 
 namespace net {
 
 // Performs certificate path construction and validation using OS X's
 // Security.framework.
-class CertVerifyProcMac : public CertVerifyProc {
+class NET_EXPORT_PRIVATE CertVerifyProcMac : public CertVerifyProc {
  public:
   CertVerifyProcMac();