Avoid conversion of index to BookmarkNode pointer unnacessarily.

components/bookmarks/browser/bookmark_index_unittest.cc

 // Copyright 2014 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 "components/bookmarks/browser/bookmark_index.h"
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 434 matching lines @@
   }
 }
 
 // Makes sure index is updated when a node is removed.
 TEST_F(BookmarkIndexTest, Remove) {
   const char* titles[] = { "a", "b" };
   const char* urls[] = {kAboutBlankURL, kAboutBlankURL};
   AddBookmarks(titles, urls, arraysize(titles));
 
   // Remove the node and make sure we don't get back any results.
-  model_->Remove(model_->other_node(), 0);
+  model_->Remove(model_->other_node()->GetChild(0));
   ExpectMatches("A", NULL, 0U);
 }
 
 // Makes sure index is updated when a node's title is changed.
 TEST_F(BookmarkIndexTest, ChangeTitle) {
   const char* titles[] = { "a", "b" };
   const char* urls[] = {kAboutBlankURL, kAboutBlankURL};
   AddBookmarks(titles, urls, arraysize(titles));
 
   // Remove the node and make sure we don't get back any results.
@@ skipping 82 matching lines @@
   // Select top two matches.
   model->GetBookmarksMatching(ASCIIToUTF16("google"), 2, &matches);
 
   ASSERT_EQ(2U, matches.size());
   EXPECT_EQ(data[0].url, matches[0].node->url());
   EXPECT_EQ(data[3].url, matches[1].node->url());
 }
 
 }  // namespace
 }  // namespace bookmarks