Implement a whitelist for code-signing certificates.

chrome/browser/safe_browsing/safe_browsing_service.cc

Index: chrome/browser/safe_browsing/safe_browsing_service.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_service.cc b/chrome/browser/safe_browsing/safe_browsing_service.cc
index 63da195311dd3327c34151f3b6a3f77f5ebcbc9a..e2384fab4e7dac2a0d6a5619b1d8073af6ec47b6 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_service.cc
@@ -303,6 +303,15 @@ bool SafeBrowsingService::MatchDownloadWhitelistUrl(const GURL& url) {
   return database_->ContainsDownloadWhitelistedUrl(url);
 }
 
+bool SafeBrowsingService::MatchDownloadWhitelistString(
+    const std::string& str) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  if (!enabled_ || !enable_download_whitelist_ || !MakeDatabaseAvailable()) {
+    return true;
+  }
+  return database_->ContainsDownloadWhitelistedString(str);
+}
+
 bool SafeBrowsingService::CheckBrowseUrl(const GURL& url,
                                          Client* client) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));