[Downloads] Move client guid for AV scanning of downloaded files to chrome/

content/browser/download/base_file.cc

Index: content/browser/download/base_file.cc
diff --git a/content/browser/download/base_file.cc b/content/browser/download/base_file.cc
index 466be326a350a732e317e00158ba762a0382fca3..90ab485c3615168e91c4d01e5ce42cf6ac40dd18 100644
--- a/content/browser/download/base_file.cc
+++ b/content/browser/download/base_file.cc
@@ -211,6 +211,10 @@ void BaseFile::Finish() {
   Close();
 }
 
+void BaseFile::SetClientGuid(const std::string& guid) {
+  client_guid_ = guid;
+}
+
 // OS_WIN, OS_MACOSX and OS_LINUX have specialized implementations.
 #if !defined(OS_WIN) && !defined(OS_MACOSX) && !defined(OS_LINUX)
 DownloadInterruptReason BaseFile::AnnotateWithSourceInformation() {