GTK: Add download notifications to the unity dock.

chrome/browser/ui/gtk/dock_service.h

Index: chrome/browser/ui/gtk/dock_service.h
diff --git a/chrome/browser/ui/gtk/dock_service.h b/chrome/browser/ui/gtk/dock_service.h
new file mode 100644
index 0000000000000000000000000000000000000000..9632efd440b28c4f8a36bffaa802a5c79712eb1d
--- /dev/null
+++ b/chrome/browser/ui/gtk/dock_service.h
@@ -0,0 +1,24 @@
+// 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.
+
+#ifndef CHROME_BROWSER_UI_GTK_DOCK_SERVICE_H_
+#define CHROME_BROWSER_UI_GTK_DOCK_SERVICE_H_
+
+// A common interface to various application docks on the Linux desktop.
+class DockService {
+ public:
+  // Returns the singleton instance of LaunchService. This can return NULL if
+  // there's no dock on this desktop.
+  static DockService* GetService();
+
+  // Possibly sets the download counter in the dock icon. Any value other than
+  // 0 displays the badge.
+  virtual void SetDownloadCount(int count) = 0;
+
+  // Possibly sets the download progress bar in the dock icon. Any value less
+  // than 1.0 shows the progress bar.
+  virtual void SetProgressPercent(float percentage) = 0;
+};
+
+#endif  // CHROME_BROWSER_UI_GTK_DOCK_SERVICE_H_