Get ClientCertStore through ResourceContext.

net/ssl/client_cert_store_impl_mac.cc

Index: net/ssl/client_cert_store_impl_mac.cc
diff --git a/net/ssl/client_cert_store_impl_mac.cc b/net/ssl/client_cert_store_impl_mac.cc
index 33457358f1e7d60ff914e670c9b9fff8093b9cd7..a0c1ca5f52738702e89cd4cc8cad908f9880cb6d 100644
--- a/net/ssl/client_cert_store_impl_mac.cc
+++ b/net/ssl/client_cert_store_impl_mac.cc
@@ -13,6 +13,7 @@
 #include <algorithm>
 #include <string>
 
+#include "base/callback.h"
 #include "base/logging.h"
 #include "base/mac/mac_logging.h"
 #include "base/mac/scoped_cftyperef.h"
@@ -172,8 +173,9 @@ bool GetClientCertsImpl(const scoped_refptr<X509Certificate>& preferred_cert,
 
 }  // namespace
 
-bool ClientCertStoreImpl::GetClientCerts(const SSLCertRequestInfo& request,
-                                         CertificateList* selected_certs) {
+void ClientCertStoreImpl::GetClientCerts(const SSLCertRequestInfo& request,
+                                         CertificateList* selected_certs,
+                                         const base::Closure& callback) {
   std::string server_domain =
       HostPortPair::FromString(request.host_and_port).host();
 
@@ -205,8 +207,11 @@ bool ClientCertStoreImpl::GetClientCerts(const SSLCertRequestInfo& request,
     base::AutoLock lock(crypto::GetMacSecurityServicesLock());
     err = SecIdentitySearchCreate(NULL, CSSM_KEYUSE_SIGN, &search);
   }
-  if (err)
-    return false;
+  if (err) {
+    selected_certs->clear();
+    callback.Run();
+    return;
+  }
   ScopedCFTypeRef<SecIdentitySearchRef> scoped_search(search);
   while (!err) {
     SecIdentityRef identity = NULL;
@@ -239,11 +244,14 @@ bool ClientCertStoreImpl::GetClientCerts(const SSLCertRequestInfo& request,
 
   if (err != errSecItemNotFound) {
     OSSTATUS_LOG(ERROR, err) << "SecIdentitySearch error";
-    return false;
+    selected_certs->clear();
+    callback.Run();
+    return;
   }
 
-  return GetClientCertsImpl(preferred_cert, regular_certs, request, true,
-                            selected_certs);
+  GetClientCertsImpl(preferred_cert, regular_certs, request, true,
+                     selected_certs);
+  callback.Run();
 }
 
 bool ClientCertStoreImpl::SelectClientCertsForTesting(