Delete the GTK+ port of Chrome.

chrome/browser/ui/bookmarks/bookmark_bar_constants.h

 // Copyright 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 CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_BAR_CONSTANTS_H_
 #define CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_BAR_CONSTANTS_H_
 
 #include "build/build_config.h"
 
 namespace chrome {
 
 // The height of Bookmarks Bar, when visible in "New Tab Page" mode.
-#if defined(TOOLKIT_GTK)
-const int kNTPBookmarkBarHeight = 57;
-#elif defined(TOOLKIT_VIEWS) || defined(OS_MACOSX)
+#if defined(TOOLKIT_VIEWS) || defined(OS_MACOSX)
 const int kNTPBookmarkBarHeight = 40;
 #endif
 
 // The height of Bookmarks Bar, when attached to the toolbar.
 #if defined(TOOLKIT_VIEWS)
 const int kBookmarkBarHeight = 28;
 #elif defined(OS_MACOSX)
 // This is actually a little smaller than it should be (by |kVisualHeightOffset|
 // points) because of the visual overlap with the main toolbar. When using this
 // to compute values other than the actual height of the toolbar, be sure to add
 // |kVisualHeightOffset|.
 const int kBookmarkBarHeight = 26;
-#elif defined(TOOLKIT_GTK)
-const int kBookmarkBarHeight = 29;
 #endif
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_BAR_CONSTANTS_H_