Move some Chrome-specific code paths out of DownloadManager and into the delegate. Getting rid of...

chrome/browser/download/mock_download_manager_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 "chrome/browser/download/mock_download_manager_delegate.h"
 
 MockDownloadManagerDelegate::~MockDownloadManagerDelegate() {
 }
 
+bool MockDownloadManagerDelegate::ShouldStartDownload(int32 download_id) {
+  return true;
+}
+
+void MockDownloadManagerDelegate::ChooseDownloadPath(
+    TabContents* tab_contents,
+    const FilePath& suggested_path,
+    void* data) {
+}
+
+TabContents* MockDownloadManagerDelegate::
+    GetAlternativeTabContentsToNotifyForDownload() {
+  return NULL;
+}
+
+bool MockDownloadManagerDelegate::ShouldOpenFileBasedOnExtension(
+    const FilePath& path) {
+  return false;
+}
+
 void MockDownloadManagerDelegate::GetSaveDir(
     TabContents* tab_contents,
     FilePath* website_save_dir,
     FilePath* download_save_dir) {
 }
 
 void MockDownloadManagerDelegate::ChooseSavePath(
     const base::WeakPtr<SavePackage>& save_package,
     const FilePath& suggested_path,
     bool can_save_as_complete) {
 }
-
-void MockDownloadManagerDelegate::ChooseDownloadPath(
-    DownloadManager* download_manager,
-    TabContents* tab_contents,
-    const FilePath& suggested_path,
-    void* data) {
-}
-
-TabContents*
-    MockDownloadManagerDelegate::GetAlternativeTabContentsToNotifyForDownload(
-        DownloadManager* download_manager) {
-  return NULL;
-}