[Mac] Move all the related files for the Wrench menu into a subdir of c/b/u/c...

chrome/browser/ui/cocoa/menu_tracked_root_view.mm

Index: chrome/browser/ui/cocoa/menu_tracked_root_view.mm
===================================================================
--- chrome/browser/ui/cocoa/menu_tracked_root_view.mm	(revision 71447)
+++ chrome/browser/ui/cocoa/menu_tracked_root_view.mm	(working copy)
@@ -1,15 +0,0 @@
-// Copyright (c) 2010 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/menu_tracked_root_view.h"
-
-@implementation MenuTrackedRootView
-
-@synthesize menuItem = menuItem_;
-
-- (void)mouseUp:(NSEvent*)theEvent {
-  [[menuItem_ menu] cancelTracking];
-}
-
-@end