Sample 1% url whitelisted PPAPI downloads to ping safe browsing server

chrome/browser/safe_browsing/download_protection_service.h

Index: chrome/browser/safe_browsing/download_protection_service.h
diff --git a/chrome/browser/safe_browsing/download_protection_service.h b/chrome/browser/safe_browsing/download_protection_service.h
index bd096b0ba64df7c6d60c9bea83b12e0d66b4943a..11bb52b7164833a2b69a107c300a637e91093336 100644
--- a/chrome/browser/safe_browsing/download_protection_service.h
+++ b/chrome/browser/safe_browsing/download_protection_service.h
@@ -115,6 +115,8 @@ class DownloadProtectionService {
       const GURL& requestor_url,
       const base::FilePath& default_file_path,
       const std::vector<base::FilePath::StringType>& alternate_extensions,
+      bool is_extended_reporting,
+      bool is_incognito,
       const CheckDownloadCallback& callback);
 
   // Display more information to the user regarding the download specified by