[Mac] Show context menu on empty BMB item.

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

 // Copyright (c) 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/string16.h"
@@ skipping 901 matching lines @@
                 ASCIIToUTF16("supertitle"),
                 GURL("http://superfriends.hall-of-justice.edu"));
   const BookmarkNode* node = parent->GetChild(0);
 
   NSCell* cell = [bar_ cellForBookmarkNode:node];
   EXPECT_TRUE(cell);
   EXPECT_NSEQ(@"supertitle", [cell title]);
   EXPECT_EQ(node, [[cell representedObject] pointerValue]);
   EXPECT_TRUE([cell menu]);
 
-  // Empty cells have no menu.
+  // Empty cells still have a menu.
   cell = [bar_ cellForBookmarkNode:nil];
-  EXPECT_FALSE([cell menu]);
+  EXPECT_TRUE([cell menu]);
   // Even empty cells have a title (of "(empty)")
   EXPECT_TRUE([cell title]);
 
   // cell is autoreleased; no need to release here
 }
 
 // Test drawing, mostly to ensure nothing leaks or crashes.
 TEST_F(BookmarkBarControllerTest, Display) {
   [[bar_ view] display];
 }
@@ skipping 1139 matching lines @@
                              "2f3b ] 4b ");
   actual = BookmarkModelTestUtils::ModelStringFromNode(root);
   EXPECT_EQ(expected, actual);
 
   // Verify that the other bookmark folder can't be deleted.
   BookmarkButton *otherButton = [bar_ otherBookmarksButton];
   EXPECT_FALSE([bar_ canDragBookmarkButtonToTrash:otherButton]);
 }
 
 }  // namespace