Add AIA fetching feature info to certificate reports

net/cert/cert_verify_proc_android.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/cert/cert_verify_proc_android.h"
 
 #include <string>
 #include <vector>
 
 #include "base/lazy_instance.h"
@@ skipping 88 matching lines @@
                                          base::StringPiece uri,
                                          ParsedCertificateList* cert_list) {
   GURL url(uri);
   if (!url.is_valid())
     return false;
   std::unique_ptr<CertNetFetcher::Request> request(fetcher->FetchCaIssuers(
       url, CertNetFetcher::DEFAULT, CertNetFetcher::DEFAULT));
   Error error;
   std::vector<uint8_t> aia_fetch_bytes;
   request->WaitForResult(&error, &aia_fetch_bytes);
+  UMA_HISTOGRAM_SPARSE_SLOWLY("Net.Certificate.AndroidAIAFetchError",
+                              std::abs(error));
   if (error != OK)
     return false;
   CertErrors errors;
   return ParsedCertificate::CreateAndAddToVector(
       aia_fetch_bytes.data(), aia_fetch_bytes.size(), {}, cert_list, &errors);
 }
 
 // Uses android::VerifyX509CertChain() to verify the certificates in |certs| for
 // |hostname| and returns the verification status. If the verification was
 // successful, this function populates |verify_result| and |verified_chain|;
@@ skipping 278 matching lines @@
     NOTREACHED();
     return ERR_FAILED;
   }
   if (IsCertStatusError(verify_result->cert_status))
     return MapCertStatusToNetError(verify_result->cert_status);
 
   return OK;
 }
 
 }  // namespace net