Put the dropdown menu button on the linux download shelf....

chrome/browser/gtk/nine_box.cc

 // 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.
 
 #include "chrome/browser/gtk/nine_box.h"
 
 #include "base/logging.h"
 
 namespace {
 
@@ skipping 31 matching lines @@
 
   // This function paints one row at a time.
   // To make indexing sane, |images| points at the current row of images,
   // so images[0] always refers to the left-most image of the current row.
   GdkPixbuf** images = &images_[0];
 
   // The upper-left and lower-right corners of the center square in the
   // rendering of the ninebox.
   const int x1 = gdk_pixbuf_get_width(images[0]);
   const int y1 = gdk_pixbuf_get_height(images[0]);
-  const int x2 = gdk_pixbuf_get_width(dst) - gdk_pixbuf_get_width(images[8]);
-  const int y2 = gdk_pixbuf_get_height(dst) - gdk_pixbuf_get_height(images[8]);
+  const int x2 = images[2] ?
+      gdk_pixbuf_get_width(dst) - gdk_pixbuf_get_width(images[2]) : x1;
+  const int y2 = images[6] ?
+      gdk_pixbuf_get_height(dst) - gdk_pixbuf_get_height(images[6]) : y1;
   DCHECK(x2 >= x1);
   DCHECK(y2 >= y1);
 
-  DrawPixbuf(images[0], dst, 0, 0);
-  RenderTopCenterStrip(dst, x1, x2);
-  DrawPixbuf(images[2], dst, x2, 0);
+  if (images[0])
+    DrawPixbuf(images[0], dst, 0, 0);
+  if (images[1])
+    RenderTopCenterStrip(dst, x1, x2);
+  if (images[2])
+    DrawPixbuf(images[2], dst, x2, 0);
 
   // Center row.  Needs vertical tiling.
   images = &images_[1 * 3];
-  TileImage(images[0], dst,
-            0, y1,
-            0, y2);
+  if (images[0]) {
+    TileImage(images[0], dst,
+              0, y1,
+              0, y2);
+  }
   if (images[1]) {
     const int delta_y = gdk_pixbuf_get_height(images[1]);
     for (int y = y1; y < y2; y += delta_y) {
       TileImage(images[1], dst,
                 x1, y,
                 x2, y);
     }
   }
-  TileImage(images[2], dst,
-            x2, y1,
-            x2, y2);
+  if (images[2]) {
+    TileImage(images[2], dst,
+              x2, y1,
+              x2, y2);
+  }
 
   // Bottom row.
   images = &images_[2 * 3];
-  DrawPixbuf(images[0], dst, 0, y2);
-  TileImage(images[1], dst,
-            x1, y2,
-            x2, y2);
-  DrawPixbuf(images[2], dst, x2, y2);
+  if (images[0])
+    DrawPixbuf(images[0], dst, 0, y2);
+  if (images[1]) {
+    TileImage(images[1], dst,
+              x1, y2,
+              x2, y2);
+  }
+  if (images[2])
+    DrawPixbuf(images[2], dst, x2, y2);
 }
 
 void NineBox::RenderTopCenterStrip(GdkPixbuf* dst, int x1, int x2) {
   TileImage(images_[1], dst,
             x1, 0,
             x2, 0);
 }
 
 void NineBox::TileImage(GdkPixbuf* src, GdkPixbuf* dst,
                         int x1, int y1, int x2, int y2) {
@@ skipping 11 matching lines @@
     dy = src_height;
   DCHECK(dx == 0 || dy == 0);
 
   for (int x = x1, y = y1; x < x2 || y < y2; x += dx, y += dy) {
     gdk_pixbuf_copy_area(src, 0, 0,
                          dx ? std::min(src_width,  dst_width - x) : src_width,
                          dy ? std::min(src_height, dst_height - y) : src_height,
                          dst, x, y);
   }
 }