Add mime type information to the download database

content/browser/download/download_item_impl.cc

Index: content/browser/download/download_item_impl.cc
diff --git a/content/browser/download/download_item_impl.cc b/content/browser/download/download_item_impl.cc
index a9b27f5c5205bbfd4e928e7c67cacf0afb79764b..f6202958dce0e3bc7e5cea298c62e6380d2a564e 100644
--- a/content/browser/download/download_item_impl.cc
+++ b/content/browser/download/download_item_impl.cc
@@ -103,6 +103,8 @@ DownloadItemImpl::DownloadItemImpl(DownloadItemImplDelegate* delegate,
                                    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,
@@ -123,6 +125,8 @@ DownloadItemImpl::DownloadItemImpl(DownloadItemImplDelegate* delegate,
       referrer_url_(referrer_url),
       transition_type_(PAGE_TRANSITION_LINK),
       has_user_gesture_(false),
+      mime_type_(mime_type),
+      original_mime_type_(original_mime_type),
       total_bytes_(total_bytes),
       received_bytes_(received_bytes),
       bytes_per_sec_(0),