Adjustments to bookmark bar folder menu placement issues....

chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.mm

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h"
 
 #include "app/l10n_util_mac.h"
 #include "app/mac/nsimage_cache.h"
 #include "base/logging.h"
 #include "base/sys_string_conversions.h"
 #import "chrome/browser/bookmarks/bookmark_model.h"
@@ skipping 212 matching lines @@
   [super drawInteriorWithFrame:cellFrame inView:controlView];
 
   // If asked to do so, and if a folder, draw the arrow.
   if (!drawFolderArrow_)
     return;
   BookmarkButton* button = static_cast<BookmarkButton*>([self controlView]);
   DCHECK([button respondsToSelector:@selector(isFolder)]);
   if ([button isFolder]) {
     NSRect imageRect = NSZeroRect;
     imageRect.size = [arrowImage_ size];
-    NSRect drawRect = NSOffsetRect(imageRect,
-                                   NSWidth(cellFrame) - NSWidth(imageRect),
-                                   (NSHeight(cellFrame) / 2.0) -
-                                   (NSHeight(imageRect) / 2.0));
+    const CGFloat kArrowOffset = 1.0;  // Required for proper centering.
+    CGFloat dX = NSWidth(cellFrame) - NSWidth(imageRect);
+    CGFloat dY = (NSHeight(cellFrame) / 2.0) - (NSHeight(imageRect) / 2.0) +
+        kArrowOffset;
+    NSRect drawRect = NSOffsetRect(imageRect, dX, dY);
     [arrowImage_ drawInRect:drawRect
                     fromRect:imageRect
                    operation:NSCompositeSourceOver
                     fraction:[self isEnabled] ? 1.0 : 0.5
                 neverFlipped:YES];
   }
 }
 
 @end