bookmarks: Remove in_memory_database.h include, it's unused.

chrome/browser/bookmarks/bookmark_index_unittest.cc

 // 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.
 
+#include "chrome/browser/bookmarks/bookmark_index.h"
+
 #include <string>
 #include <vector>
 
 #include "base/message_loop.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
-#include "chrome/browser/bookmarks/bookmark_index.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/bookmarks/bookmark_utils.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_service_factory.h"
-#include "chrome/browser/history/in_memory_database.h"
 #include "chrome/browser/history/url_database.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
 
 class BookmarkIndexTest : public testing::Test {
  public:
   BookmarkIndexTest() : model_(new BookmarkModel(NULL)) {}
@@ skipping 275 matching lines @@
   EXPECT_EQ(data[1].url, matches[3].node->url());
 
   matches.clear();
   // Select top two matches.
   model->GetBookmarksWithTitlesMatching(ASCIIToUTF16("google"), 2, &matches);
 
   EXPECT_EQ(2, static_cast<int>(matches.size()));
   EXPECT_EQ(data[0].url, matches[0].node->url());
   EXPECT_EQ(data[3].url, matches[1].node->url());
 }