Add mime type information to the download database

content/browser/download/download_manager_impl.h

Index: content/browser/download/download_manager_impl.h
diff --git a/content/browser/download/download_manager_impl.h b/content/browser/download/download_manager_impl.h
index 6381417832e0837137f859ff8931f6101ad9de89..630c83252a8cc3eafd58be7185dc41a598a35e41 100644
--- a/content/browser/download/download_manager_impl.h
+++ b/content/browser/download/download_manager_impl.h
@@ -7,6 +7,7 @@
 
 #include <map>
 #include <set>
+#include <string>
 
 #include "base/containers/hash_tables.h"
 #include "base/memory/ref_counted.h"
@@ -78,6 +79,8 @@ class CONTENT_EXPORT DownloadManagerImpl : public DownloadManager,
       const base::FilePath& target_path,
       const std::vector<GURL>& url_chain,
       const GURL& referrer_url,
+      const std::string& mime_type,
+      const std::string& original_mime_type,
       const base::Time& start_time,
       const base::Time& end_time,
       const std::string& etag,