Handle uncommon download verdict for safebrowsing download protection.

chrome/browser/safe_browsing/download_protection_service.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 "chrome/browser/safe_browsing/download_protection_service.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/format_macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 429 matching lines @@
         net::HTTP_OK == source->GetResponseCode()) {
       ClientDownloadResponse response;
       std::string data;
       bool got_data = source->GetResponseAsString(&data);
       DCHECK(got_data);
       if (!response.ParseFromString(data)) {
         reason = REASON_INVALID_RESPONSE_PROTO;
       } else if (response.verdict() == ClientDownloadResponse::DANGEROUS) {
         reason = REASON_DOWNLOAD_DANGEROUS;
         result = DANGEROUS;
+      } else if (response.verdict() == ClientDownloadResponse::UNCOMMON) {
+        reason = REASON_DOWNLOAD_UNCOMMON;
+        result = UNCOMMON;
       } else {
         reason = REASON_DOWNLOAD_SAFE;
       }
     }
     // We don't need the fetcher anymore.
     fetcher_.reset();
     RecordImprovedProtectionStats(reason);
     UMA_HISTOGRAM_TIMES("SBClientDownload.DownloadRequestDuration",
                         base::TimeTicks::Now() - start_time_);
     FinishRequest(result);
@@ skipping 397 matching lines @@
 
   std::string issuer_fp = base::HexEncode(issuer.fingerprint().data,
                                           sizeof(issuer.fingerprint().data));
   for (std::set<std::string>::iterator it = paths_to_check.begin();
        it != paths_to_check.end(); ++it) {
     whitelist_strings->push_back("cert/" + issuer_fp + *it);
   }
 }
 
 }  // namespace safe_browsing