Add "Remove from list" for each download in domui page....

chrome/browser/dom_ui/downloads_dom_handler.h

Index: chrome/browser/dom_ui/downloads_dom_handler.h
===================================================================
--- chrome/browser/dom_ui/downloads_dom_handler.h	(revision 22137)
+++ chrome/browser/dom_ui/downloads_dom_handler.h	(working copy)
@@ -58,6 +58,10 @@
   // Callback for the "pause" message - pauses the file download.
   void HandlePause(const Value* value);
 
+  // Callback for the "remove" message - removes the file download from shelf
+  // and list.
+  void HandleRemove(const Value* value);
+
   // Callback for the "cancel" message - cancels the download.
   void HandleCancel(const Value* value);