Move download stuff to download tab helper.

content/browser/tab_contents/tab_contents_delegate.cc

 // 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 "content/browser/tab_contents/tab_contents_delegate.h"
 
 #include "chrome/common/url_constants.h"
 #include "ui/gfx/rect.h"
 
 std::string TabContentsDelegate::GetNavigationHeaders(const GURL& url) {
@@ skipping 77 matching lines @@
     TabContents* contents, bool blocked) {
 }
 
 void TabContentsDelegate::TabContentsFocused(TabContents* tab_content) {
 }
 
 int TabContentsDelegate::GetExtraRenderViewHeight() const {
   return 0;
 }
 
-bool TabContentsDelegate::CanDownload(int request_id) {
-  return true;
-}
-
-void TabContentsDelegate::OnStartDownload(DownloadItem* download,
-                                          TabContents* tab) {
-}
-
 bool TabContentsDelegate::HandleContextMenu(const ContextMenuParams& params) {
   return false;
 }
 
 bool TabContentsDelegate::ExecuteContextMenuCommand(int command) {
   return false;
 }
 
 void TabContentsDelegate::ShowPageInfo(Profile* profile,
                                        const GURL& url,
@@ skipping 92 matching lines @@
 
 bool TabContentsDelegate::ShouldShowHungRendererDialog() {
   return true;
 }
 
 void TabContentsDelegate::WorkerCrashed() {
 }
 
 TabContentsDelegate::~TabContentsDelegate() {
 }