Attempt four at landing the "histogram.h removed from message_loop.h" patch.

chrome/browser/download/download_util.h

 // Copyright (c) 2009 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.
 //
 // Download utilities.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
 
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
-#include "base/task.h"
 #include "gfx/native_widget_types.h"
 
 #if defined(TOOLKIT_VIEWS)
 #include "views/view.h"
 #endif
 
 namespace gfx {
 class Canvas;
 }
 
 class BaseDownloadItemModel;
 class DictionaryValue;
 class DownloadItem;
 class FilePath;
 class SkBitmap;
 
 namespace download_util {
 
-// DownloadProgressTask --------------------------------------------------------
-
-// A class for managing the timed progress animations for a download view. The
-// view must implement an UpdateDownloadProgress() method.
-template<class DownloadView>
-class DownloadProgressTask : public Task {
- public:
-  explicit DownloadProgressTask(DownloadView* view) : view_(view) {}
-  virtual ~DownloadProgressTask() {}
-  virtual void Run() {
-    view_->UpdateDownloadProgress();
-  }
- private:
-  DownloadView* view_;
-  DISALLOW_COPY_AND_ASSIGN(DownloadProgressTask);
-};
-
 // Download opening ------------------------------------------------------------
 
 // Whether it is OK to open this download.
 bool CanOpenDownload(DownloadItem* download);
 
 // Open the file associated with this download (wait for the download to
 // complete if it is in progress).
 void OpenDownload(DownloadItem* download);
 
 // Download temporary file creation --------------------------------------------
@@ skipping 111 matching lines @@
 void AppendNumberToPath(FilePath* path, int number);
 
 // Attempts to find a number that can be appended to that path to make it
 // unique. If |path| does not exist, 0 is returned.  If it fails to find such
 // a number, -1 is returned.
 int GetUniquePathNumber(const FilePath& path);
 
 }  // namespace download_util
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_