Separate SBClientDownload.SignedOrWhitelistedDownload metric into two buckets,

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 <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 651 matching lines @@
       } else {
         PostFinishTask(UNKNOWN, REASON_ARCHIVE_WITHOUT_BINARIES);
         return;
       }
     }
 
     OnFileFeatureExtractionDone();
   }
 #endif  // defined(OS_MACOSX)
 
-  static void RecordCountOfSignedOrWhitelistedDownload() {
-    UMA_HISTOGRAM_COUNTS("SBClientDownload.SignedOrWhitelistedDownload", 1);
+  enum WhitelistType {
+    URL_WHITELIST,
+    SIGNATURE_WHITELIST,
+    WHITELIST_TYPE_MAX
+  };
+
+  static void RecordCountOfWhitelistedDownload(WhitelistType type) {
+    UMA_HISTOGRAM_ENUMERATION("SBClientDownload.WhitelistedDownload",
+                              type,
+                              WHITELIST_TYPE_MAX);
   }
 
   void CheckWhitelists() {
     DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
     if (!database_manager_.get()) {
       PostFinishTask(UNKNOWN, REASON_SB_DISABLED);
       return;
     }
 
     const GURL& url = url_chain_.back();
     // TODO(asanka): This may acquire a lock on the SB DB on the IO thread.
     if (url.is_valid() && database_manager_->MatchDownloadWhitelistUrl(url)) {
       DVLOG(2) << url << " is on the download whitelist.";
-      RecordCountOfSignedOrWhitelistedDownload();
+      RecordCountOfWhitelistedDownload(URL_WHITELIST);
       // TODO(grt): Continue processing without uploading so that
       // ClientDownloadRequest callbacks can be run even for this type of safe
       // download.
       PostFinishTask(SAFE, REASON_WHITELISTED_URL);
       return;
     }
 
     if (signature_info_.trusted()) {
-      RecordCountOfSignedOrWhitelistedDownload();
       for (int i = 0; i < signature_info_.certificate_chain_size(); ++i) {
         if (CertificateChainIsWhitelisted(
                 signature_info_.certificate_chain(i))) {
+          RecordCountOfWhitelistedDownload(SIGNATURE_WHITELIST);
           // TODO(grt): Continue processing without uploading so that
           // ClientDownloadRequest callbacks can be run even for this type of
           // safe download.
           PostFinishTask(SAFE, REASON_TRUSTED_EXECUTABLE);
           return;
         }
       }
     }
 
     if (!pingback_enabled_) {
@@ skipping 531 matching lines @@
 GURL DownloadProtectionService::GetDownloadRequestUrl() {
   GURL url(kDownloadRequestUrl);
   std::string api_key = google_apis::GetAPIKey();
   if (!api_key.empty())
     url = url.Resolve("?key=" + net::EscapeQueryParamValue(api_key, true));
 
   return url;
 }
 
 }  // namespace safe_browsing