Download resumption - Preliminary

content/browser/download/download_item_impl_delegate.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_DELEGATE_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_DELEGATE_H_
 
 #include "base/file_path.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/download_url_parameters.h"
 
 class DownloadFileManager;
 class DownloadItemImpl;
 
 namespace content {
 class BrowserContext;
 }
 
 // Delegate for operations that a DownloadItemImpl can't do for itself.
 // The base implementation of this class does nothing (returning false
@@ skipping 16 matching lines @@
   virtual bool ShouldOpenDownload(DownloadItemImpl* download);
 
   // Checks whether a downloaded file still exists and updates the
   // file's state if the file is already removed.
   // The check may or may not result in a later asynchronous call
   // to OnDownloadedFileRemoved().
   virtual void CheckForFileRemoval(DownloadItemImpl* download_item);
 
   // If all pre-requisites have been met, complete download processing.
   // TODO(rdsmith): Move into DownloadItem.
-  virtual void MaybeCompleteDownload(DownloadItemImpl* download);
+  virtual void MaybeCompleteDownload(int32 download_id);
+
+  // Called when an interrupted download is resumed.
+  // |download_id| is the local ID of the download.
+  virtual void RestartInterruptedDownload(
+      DownloadItemImpl* download,
+      const content::DownloadUrlParameters::OnStartedCallback& callback);
 
   // For contextual issues like language and prefs.
   virtual content::BrowserContext* GetBrowserContext() const;
 
   // Get the DownloadFileManager to use for this download.
   virtual DownloadFileManager* GetDownloadFileManager();
 
   // Handle any delegate portions of a state change operation on the
   // DownloadItem.
   virtual void DownloadStopped(DownloadItemImpl* download);
   virtual void DownloadCompleted(DownloadItemImpl* download);
   virtual void DownloadOpened(DownloadItemImpl* download);
   virtual void DownloadRemoved(DownloadItemImpl* download);
   virtual void DownloadRenamedToIntermediateName(
       DownloadItemImpl* download);
   virtual void DownloadRenamedToFinalName(DownloadItemImpl* download);
 
   // Assert consistent state for delgate object at various transitions.
   virtual void AssertStateConsistent(DownloadItemImpl* download) const;
 
  private:
   // For "Outlives attached DownloadItemImpl" invariant assertion.
   int count_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItemImplDelegate);
 };
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_DELEGATE_H_