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diff --git a/chrome/browser/cocoa/download_item_cell.h b/chrome/browser/cocoa/download_item_cell.h
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+++ b/chrome/browser/cocoa/download_item_cell.h
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+// 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.
+
+#ifndef CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_CELL_H_
+#define CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_CELL_H_
+
+#import "base/cocoa_protocols_mac.h"
+#include "base/scoped_ptr.h"
+#import "chrome/browser/cocoa/gradient_button_cell.h"
+
+#include "base/file_path.h"
+
+class BaseDownloadItemModel;
+
+// A button cell that implements the weird button/popup button hybrid that is
+// used by the download items.
+
+// The button represented by this cell consists of a button part on the left
+// and a dropdown-menu part on the right. This enum describes which part the
+// mouse cursor is over currently.
+enum DownloadItemMousePosition {
+  kDownloadItemMouseOutside,
+  kDownloadItemMouseOverButtonPart,
+  kDownloadItemMouseOverDropdownPart
+};
+
+@interface DownloadItemCell : GradientButtonCell<NSAnimationDelegate> {
+ @private
+  // Track which part of the button the mouse is over
+  DownloadItemMousePosition mousePosition_;
+  int mouseInsideCount_;
+  scoped_nsobject<NSTrackingArea> trackingAreaButton_;
+  scoped_nsobject<NSTrackingArea> trackingAreaDropdown_;
+
+  FilePath downloadPath_;  // stored unelided
+  NSString* secondaryTitle_;
+  NSFont* secondaryFont_;
+  int percentDone_;
+  scoped_nsobject<NSAnimation> completionAnimation_;
+
+  BOOL isStatusTextVisible_;
+  CGFloat titleY_;
+  CGFloat statusAlpha_;
+  scoped_nsobject<NSAnimation> hideStatusAnimation_;
+
+  scoped_ptr<ThemeProvider> themeProvider_;
+}
+
+- (void)setStateFromDownload:(BaseDownloadItemModel*)downloadModel;
+
+@property (nonatomic, copy) NSString* secondaryTitle;
+@property (nonatomic, retain) NSFont* secondaryFont;
+
+// Returns if the mouse is over the button part of the cell.
+- (BOOL)isMouseOverButtonPart;
+
+@end
+
+#endif  // CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_CELL_H_
+