[Downloads] Rework how hashes are calculated for download files.

content/browser/download/base_file_linux.cc

Index: content/browser/download/base_file_linux.cc
diff --git a/content/browser/download/base_file_linux.cc b/content/browser/download/base_file_linux.cc
index 721cd60269432dea77def58ea658c356c25609ec..6c62be3230232fcae9c9e1b00f027779bcf78cf1 100644
--- a/content/browser/download/base_file_linux.cc
+++ b/content/browser/download/base_file_linux.cc
@@ -9,11 +9,14 @@
 
 namespace content {
 
-DownloadInterruptReason BaseFile::AnnotateWithSourceInformation() {
+DownloadInterruptReason BaseFile::AnnotateWithSourceInformation(
+    const std::string& client_guid,
+    const GURL& source_url,
+    const GURL& referrer_url) {
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
   DCHECK(!detached_);
 
-  AddOriginMetadataToFile(full_path_, source_url_, referrer_url_);
+  AddOriginMetadataToFile(full_path_, source_url, referrer_url);
   return DOWNLOAD_INTERRUPT_REASON_NONE;
 }