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diff --git a/chromium/content/browser/download/download_item_impl_delegate.h b/chromium/content/browser/download/download_item_impl_delegate.h
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+// 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/callback.h"
+#include "base/files/file_path.h"
+#include "content/common/content_export.h"
+#include "content/public/browser/download_danger_type.h"
+#include "content/public/browser/download_item.h"
+#include "content/public/browser/download_url_parameters.h"
+
+namespace content {
+class DownloadItemImpl;
+class BrowserContext;
+
+// Delegate for operations that a DownloadItemImpl can't do for itself.
+// The base implementation of this class does nothing (returning false
+// on predicates) so interfaces not of interest to a derived class may
+// be left unimplemented.
+class CONTENT_EXPORT DownloadItemImplDelegate {
+ public:
+  typedef base::Callback<void(
+      const base::FilePath&,            // Target path
+      DownloadItem::TargetDisposition,  // overwrite/uniquify target
+      DownloadDangerType,
+      const base::FilePath&             // Intermediate file path
+                              )> DownloadTargetCallback;
+
+  // The boolean argument indicates whether or not the download was
+  // actually opened.
+  typedef base::Callback<void(bool)> ShouldOpenDownloadCallback;
+
+  DownloadItemImplDelegate();
+  virtual ~DownloadItemImplDelegate();
+
+  // Used for catching use-after-free errors.
+  void Attach();
+  void Detach();
+
+  // Request determination of the download target from the delegate.
+  virtual void DetermineDownloadTarget(
+      DownloadItemImpl* download, const DownloadTargetCallback& callback);
+
+  // Allows the delegate to delay completion of the download.  This function
+  // will either return true (if the download may complete now) or will return
+  // false and call the provided callback at some future point.  This function
+  // may be called repeatedly.
+  virtual bool ShouldCompleteDownload(
+      DownloadItemImpl* download,
+      const base::Closure& complete_callback);
+
+  // Allows the delegate to override the opening of a download. If it returns
+  // true then it's reponsible for opening the item.
+  virtual bool ShouldOpenDownload(
+      DownloadItemImpl* download, const ShouldOpenDownloadCallback& callback);
+
+  // Tests if a file type should be opened automatically.
+  virtual bool ShouldOpenFileBasedOnExtension(const base::FilePath& path);
+
+  // 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);
+
+  // Called when an interrupted download is resumed.
+  virtual void ResumeInterruptedDownload(
+      scoped_ptr<content::DownloadUrlParameters> params,
+      uint32 id);
+
+  // For contextual issues like language and prefs.
+  virtual BrowserContext* GetBrowserContext() const;
+
+  // Update the persistent store with our information.
+  virtual void UpdatePersistence(DownloadItemImpl* download);
+
+  // Opens the file associated with this download.
+  virtual void OpenDownload(DownloadItemImpl* download);
+
+  // Shows the download via the OS shell.
+  virtual void ShowDownloadInShell(DownloadItemImpl* download);
+
+  // Handle any delegate portions of a state change operation on the
+  // DownloadItem.
+  virtual void DownloadRemoved(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);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_DELEGATE_H_