net: remove DNS certificate checking code.

net/url_request/url_request_context_storage.h

Index: net/url_request/url_request_context_storage.h
diff --git a/net/url_request/url_request_context_storage.h b/net/url_request/url_request_context_storage.h
index 4a2df3d2c3a2924874ebc5dcfa491a6b7698e8c6..8ae2a0029fc4b15ce81428dc5c0e9102a2c466f4 100644
--- a/net/url_request/url_request_context_storage.h
+++ b/net/url_request/url_request_context_storage.h
@@ -15,7 +15,6 @@ namespace net {
 
 class CertVerifier;
 class CookieStore;
-class DnsCertProvenanceChecker;
 class FraudulentCertificateReporter;
 class FtpTransactionFactory;
 class HostResolver;
@@ -49,7 +48,6 @@ class NET_EXPORT URLRequestContextStorage {
   void set_cert_verifier(CertVerifier* cert_verifier);
   void set_origin_bound_cert_service(
       OriginBoundCertService* origin_bound_cert_service);
-  void set_dns_cert_checker(DnsCertProvenanceChecker* dns_cert_checker);
   void set_fraudulent_certificate_reporter(
       FraudulentCertificateReporter* fraudulent_certificate_reporter);
   void set_http_auth_handler_factory(
@@ -78,7 +76,6 @@ class NET_EXPORT URLRequestContextStorage {
   scoped_ptr<HostResolver> host_resolver_;
   scoped_ptr<CertVerifier> cert_verifier_;
   scoped_ptr<OriginBoundCertService> origin_bound_cert_service_;
-  scoped_ptr<DnsCertProvenanceChecker> dns_cert_checker_;
   scoped_ptr<FraudulentCertificateReporter> fraudulent_certificate_reporter_;
   scoped_ptr<HttpAuthHandlerFactory> http_auth_handler_factory_;
   scoped_ptr<ProxyService> proxy_service_;