Move DrawDownloadItem() implementation to download_item_drag.cc

chrome/browser/ui/gtk/download/download_item_drag.cc

Index: chrome/browser/ui/gtk/download/download_item_drag.cc
diff --git a/chrome/browser/ui/gtk/download/download_item_drag.cc b/chrome/browser/ui/gtk/download/download_item_drag.cc
index 0128fe658feaccc6f131b13e4225fc3c62f93939..1e5575f0ba462e403955d3b73d8a8bfb898acae6 100644
--- a/chrome/browser/ui/gtk/download/download_item_drag.cc
+++ b/chrome/browser/ui/gtk/download/download_item_drag.cc
@@ -6,6 +6,7 @@
 
 #include "base/files/file_path.h"
 #include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/download/drag_download_item.h"
 #include "content/public/browser/download_item.h"
 #include "net/base/net_util.h"
 #include "ui/base/dragdrop/gtk_dnd_util.h"
@@ -126,3 +127,9 @@ void DownloadItemDrag::OnDragDataGet(GtkWidget* widget,
                                      guint time) {
   drag_data_->OnDragDataGet(widget, context, selection_data, target_type, time);
 }
+
+void DragDownloadItem(const content::DownloadItem* download,
+                      gfx::Image* icon,
+                      gfx::NativeView view) {
+  DownloadItemDrag::BeginDrag(download, icon);
+}