Revert of Removing "All Bookmarks"

ios/chrome/browser/ui/bookmarks/bookmark_utils_ios_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 <memory>
 #include <vector>
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
@@ skipping 160 matching lines @@
   EXPECT_EQ(folder, mobileNode);
 
   toMove.clear();
   toMove.insert(f2a);
   toMove.insert(f2b);
   folder = bookmark_utils_ios::defaultMoveFolder(toMove, _bookmarkModel);
   EXPECT_EQ(folder, f2);
 }
 
 TEST_F(BookmarkIOSUtilsUnitTest, TestPositionCache) {
+  // Try to store and retrieve a cache for the allMenuItem.
+  BookmarkMenuItem* item = [BookmarkMenuItem allMenuItem];
+  CGFloat position = 23;
+  bookmark_utils_ios::CachePosition(position, item);
+  CGFloat outPosition;
+  BookmarkMenuItem* outItem;
+  BOOL result = bookmark_utils_ios::GetPositionCache(_bookmarkModel, &outItem,
+                                                     &outPosition);
+  if (experimental_flags::IsAllBookmarksEnabled()) {
+    ASSERT_TRUE(result);
+    EXPECT_NSEQ(item, outItem);
+    EXPECT_NEAR(position, outPosition, 0.01);
+  } else {
+    ASSERT_FALSE(result);
+  }
+
   // Try to store and retrieve a cache for the folderMenuItem.
   const BookmarkNode* mobileNode = _bookmarkModel->mobile_node();
   const BookmarkNode* f1 = AddFolder(mobileNode, @"f1");
-  BookmarkMenuItem* item =
-      [BookmarkMenuItem folderMenuItemForNode:f1 rootAncestor:NULL];
-  CGFloat position = 23;
+  item = [BookmarkMenuItem folderMenuItemForNode:f1 rootAncestor:NULL];
   bookmark_utils_ios::CachePosition(position, item);
-  BookmarkMenuItem* outItem = nil;
-  CGFloat outPosition;
-  BOOL result = bookmark_utils_ios::GetPositionCache(_bookmarkModel, &outItem,
-                                                     &outPosition);
+  result = bookmark_utils_ios::GetPositionCache(_bookmarkModel, &outItem,
+                                                &outPosition);
   ASSERT_TRUE(result);
   EXPECT_NSEQ(item, outItem);
   EXPECT_NEAR(position, outPosition, 0.01);
   EXPECT_EQ(f1, outItem.folder);
   EXPECT_EQ(bookmarks::MenuItemFolder, outItem.type);
 }
 
 TEST_F(BookmarkIOSUtilsUnitTest, TestBookmarkModelChangesPositionCache) {
   // Try to store and retrieve a cache for the folderMenuItem
   const BookmarkNode* mobileNode = _bookmarkModel->mobile_node();
@@ skipping 185 matching lines @@
   vector1.push_back(bookmark1);
   vector2.insert(vector2.begin(), bookmark1);
   missingNodesIndices =
       bookmark_utils_ios::MissingNodesIndices(vector1, vector2);
   EXPECT_EQ(2u, missingNodesIndices.size());
   EXPECT_EQ(2u, missingNodesIndices[0]);
   EXPECT_EQ(3u, missingNodesIndices[1]);
 }
 
 }  // namespace