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

base/file_util.h

Index: base/file_util.h
diff --git a/base/file_util.h b/base/file_util.h
index 9673a6111fead5450e04ce2a60ae78f11a7b8ce4..c6d8f623edb5f46c83992b96c6f0d17b103fa456 100644
--- a/base/file_util.h
+++ b/base/file_util.h
@@ -78,7 +78,37 @@ BASE_EXPORT bool DeleteFile(const FilePath& path, bool recursive);
 // 1) The file/directory to be deleted should exist in a temp folder.
 // 2) The directory to be deleted must be empty.
 BASE_EXPORT bool DeleteFileAfterReboot(const FilePath& path);
-#endif
+
+// Invokes IAttachmentExecute::Save to validate the downloaded file. The call
+// may scan the file for viruses and if necessary, annotate it with evidence. As
+// a result of the validation, the file may be deleted.  See:
+// http://msdn.microsoft.com/en-us/bb776299
+//
+// If Attachment Execution Services is unavailable, then this function will
+// attempt to manually annotate the file with security zone information. A
+// failure code will be returned in this case even if the file is sucessfully
+// annotated.
+//
+// IAE::Save() will delete the file if it was found to be blocked by local
+// security policy or if it was found to be infected. The call may also delete
+// the file due to other failures (http://crbug.com/153212). A failure code will
+// be returned in these cases.
+//
+// Typical return values:
+//   S_OK   : The file was okay. If any viruses were found, they were cleaned.
+//   E_FAIL : Virus infected.
+//   INET_E_SECURITY_PROBLEM : The file was blocked due to security policy.
+//
+// Any other return value indicates an unexpected error during the scan.
+//
+// |full_path| : is the path to the downloaded file. This should be the final
+//               path of the download.
+// |source_url|: the source URL for the download. If this is empty,
+//               the source will not be set.
+BASE_EXPORT HRESULT ScanAndSaveDownloadedFile(
+    const base::FilePath& full_path,
+    const std::string& source_url);
+#endif  // defined(OS_WIN)
 
 // Moves the given path, whether it's a file or a directory.
 // If a simple rename is not possible, such as in the case where the paths are