Suppress the clang warning "-Wdeprecated-declarations" for CSSM API calls.

net/base/keygen_handler_mac.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 "net/base/keygen_handler.h"
 
 #include <Security/SecAsn1Coder.h>
 #include <Security/SecAsn1Templates.h>
 #include <Security/Security.h>
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/mac/mac_logging.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/synchronization/lock.h"
 #include "crypto/cssm_init.h"
 #include "crypto/mac_security_services_lock.h"
 
+// CSSM functions are deprecated as of OSX 10.7, but have no replacement.
+// https://bugs.chromium.org/p/chromium/issues/detail?id=590914#c1
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+
 // These are in Security.framework but not declared in a public header.
 extern const SecAsn1Template kSecAsn1AlgorithmIDTemplate[];
 extern const SecAsn1Template kSecAsn1SubjectPublicKeyInfoTemplate[];
 
 namespace net {
 
 // Declarations of Netscape keygen cert structures for ASN.1 encoding:
 
 struct PublicKeyAndChallenge {
   CSSM_X509_SUBJECT_PUBLIC_KEY_INFO spki;
@@ skipping 285 matching lines @@
     return err;
   }
   err = CSSM_SignData(cc_handle, &data, 1, CSSM_ALGID_NONE, signature);
   if (err)
     crypto::LogCSSMError("CSSM_SignData", err);
   CSSM_DeleteContext(cc_handle);
   return err;
 }
 
 }  // namespace net
+
+#pragma clang diagnostic pop  // "-Wdeprecated-declarations"