Make the id used in IconMsg_DownloadFavicon unique

chrome/browser/ui/cocoa/tab_contents/favicon_util.h

Index: chrome/browser/ui/cocoa/tab_contents/favicon_util.h
diff --git a/chrome/browser/ui/cocoa/tab_contents/favicon_util.h b/chrome/browser/ui/cocoa/tab_contents/favicon_util.h
deleted file mode 100644
index be1df284f615bb25aff9d8839370fc01a19a1e81..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/cocoa/tab_contents/favicon_util.h
+++ /dev/null
@@ -1,20 +0,0 @@
-// 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_COCOA_TAB_CONTENTS_FAVICON_UTIL_H_
-#define CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_FAVICON_UTIL_H_
-
-@class NSImage;
-class TabContents;
-
-namespace mac {
-
-// Returns an autoreleased favicon for a given TabContents. If |contents|
-// is NULL or there's no favicon for the NavigationEntry, this will return the
-// default image.
-NSImage* FaviconForTabContents(TabContents* contents);
-
-}  // namespace mac
-
-#endif  // CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_FAVICON_UTIL_H_