Revert of Removing "All Bookmarks"

ios/chrome/browser/ui/bookmarks/bookmark_position_cache_unittest.mm

 // Copyright 2013 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 "ios/chrome/browser/ui/bookmarks/bookmark_position_cache.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/gtest_mac.h"
 
 namespace {
 
+TEST(BookmarkPositionCacheTest, TestMenuItemAllCoding) {
+  BookmarkPositionCache* cache =
+      [BookmarkPositionCache cacheForMenuItemAllWithPosition:23.2];
+
+  NSData* data = [NSKeyedArchiver archivedDataWithRootObject:cache];
+  BookmarkPositionCache* cache2 =
+      [NSKeyedUnarchiver unarchiveObjectWithData:data];
+  EXPECT_NSEQ(cache, cache2);
+}
+
 TEST(BookmarkPositionCacheTest, TestMenuItemFolderCoding) {
   BookmarkPositionCache* cache =
       [BookmarkPositionCache cacheForMenuItemFolderWithPosition:1010101
                                                        folderId:6363];
 
   NSData* data = [NSKeyedArchiver archivedDataWithRootObject:cache];
   BookmarkPositionCache* cache2 =
       [NSKeyedUnarchiver unarchiveObjectWithData:data];
   EXPECT_NSEQ(cache, cache2);
 }
 
 }  // anonymous namespace