linux: offset toolbar graphic so tabs merge in properly.

chrome/browser/gtk/nine_box.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.
 
 #ifndef CHROME_BROWSER_GTK_NINE_BOX_H_
 #define CHROME_BROWSER_GTK_NINE_BOX_H_
 
 #include <gtk/gtk.h>
 
 // A NineBox manages a set of source images representing a 3x3 grid, where
@@ skipping 13 matching lines @@
   // Takes ownership of each image, but not the |images| array.
   NineBox(GdkPixbuf* images[9]);
   ~NineBox();
 
   // Render the NineBox to |dst|.
   // The images will be tiled to fit into the widget.
   void RenderToWidget(GtkWidget* dst);
 
   // Render the top row of images to |dst| between |x1| and |x2|.
   // This is split from RenderToWidget so the toolbar can use it.
-  void RenderTopCenterStrip(GtkWidget* dst, int x1, int x2);
+  void RenderTopCenterStrip(GtkWidget* dst, int x1, int x2, int y1);
 
  private:
   // Repeatedly stamp src across dst.
   void TileImage(GtkWidget* dst, GdkPixbuf* src,
                  int x1, int y1, int x2, int y2);
 
   GdkPixbuf* images_[9];
 };
 
 #endif  // CHROME_BROWSER_GTK_NINE_BOX_H_