Move download stuff to download tab helper.

chrome/browser/tab_contents/tab_util.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
 #include "chrome/browser/tab_contents/tab_util.h"
 
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 
-TabContents* tab_util::GetTabContentsByID(int render_process_id,
-                                          int render_view_id) {
+TabContents* tab_util::GetTabContentsByID(int render_process_host_id,
+                                          int routing_id) {
   RenderViewHost* render_view_host =
-      RenderViewHost::FromID(render_process_id, render_view_id);
+      RenderViewHost::FromID(render_process_host_id, routing_id);
   if (!render_view_host)
     return NULL;
 
   return render_view_host->delegate()->GetAsTabContents();
 }
+
+TabContentsWrapper* tab_util::GetTabContentsWrapperByID(

[jam, 2011/05/13 06:22:02]

note: we want to get rid of GetAsTabContents() since it's a big hack.  So we
should really avoid adding GetTabContentsWrapperByID since it's really code
that'll have to be removed in the future (since GetTabContentsByID itself has to
be removed)

+    int render_process_host_id, int routing_id) {
+  TabContents* tab = GetTabContentsByID(render_process_host_id, routing_id);
+  if (!tab)
+    return NULL;
+
+  return TabContentsWrapper::GetCurrentWrapperForContents(tab);
+}
+