Linux: work around the fact that the download dialog has not been ported....

chrome/browser/tab_contents/tab_contents.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 
 #include "build/build_config.h"
 
 #include <map>
@@ skipping 823 matching lines @@
                            int new_request_id);
   virtual bool CanBlur() const;
   virtual gfx::Rect GetRootWindowResizerRect() const;
   virtual void RendererUnresponsive(RenderViewHost* render_view_host,
                                     bool is_during_unload);
   virtual void RendererResponsive(RenderViewHost* render_view_host);
   virtual void LoadStateChanged(const GURL& url, net::LoadState load_state);
   virtual void OnDidGetApplicationInfo(
       int32 page_id,
       const webkit_glue::WebApplicationInfo& info);
-  virtual void OnEnterOrSpace();
+  virtual void OnUserGesture();
   virtual void OnFindReply(int request_id,
                            int number_of_matches,
                            const gfx::Rect& selection_rect,
                            int active_match_ordinal,
                            bool final_update);
   virtual bool IsExternalTabContainer() const;
 
   // SelectFileDialog::Listener ------------------------------------------------
 
   virtual void FileSelected(const FilePath& path, int index, void* params);
@@ skipping 229 matching lines @@
   // True if the user has decided to block future javascript messages. This is
   // reset on navigations to false on navigations.
   bool suppress_javascript_messages_;
 
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_