[Downloads] Update origin info after each response.

content/browser/download/download_stats.h

Index: content/browser/download/download_stats.h
diff --git a/content/browser/download/download_stats.h b/content/browser/download/download_stats.h
index b1307d34009552a56d0a294292e7c6e67555d2d0..0e59884714534ac2ca35bda011d4c42f25895527 100644
--- a/content/browser/download/download_stats.h
+++ b/content/browser/download/download_stats.h
@@ -218,6 +218,19 @@ enum SavePackageEvent {
 
 void RecordSavePackageEvent(SavePackageEvent event);
 
+enum OriginStateOnResumption {
+  ORIGIN_STATE_ON_RESUMPTION_ADDITIONAL_REDIRECTS = 1<<0,
+  ORIGIN_STATE_ON_RESUMPTION_VALIDATORS_CHANGED = 1<<1,
+  ORIGIN_STATE_ON_RESUMPTION_CONTENT_DISPOSITION_CHANGED = 1<<2,
+  ORIGIN_STATE_ON_RESUMPTION_MAX = 1<<3
+};
+
+// Record the state of the origin information across a download resumption
+// request. |state| is a combination of values from OriginStateOnResumption
+// enum.
+void RecordOriginStateOnResumption(bool is_partial,
+                                   int state);
+
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_STATS_H_