introduce chrome/browser/common directory and move url_database(and its dependencies)

chrome/browser/history/in_memory_database.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_HISTORY_IN_MEMORY_DATABASE_H_
 #define CHROME_BROWSER_HISTORY_IN_MEMORY_DATABASE_H_
 
 #include "base/basictypes.h"
-#include "chrome/browser/history/url_database.h"
+#include "chrome/browser/common/url_database/url_database.h"
 #include "sql/connection.h"
 
 class FilePath;
 
 namespace history {
 
 // Class used for a fast in-memory cache of typed URLs. Used for inline
 // autocomplete since it is fast enough to be called synchronously as the user
 // is typing.
 class InMemoryDatabase : public URLDatabase {
@@ skipping 20 matching lines @@
   bool InitDB();
 
   sql::Connection db_;
 
   DISALLOW_COPY_AND_ASSIGN(InMemoryDatabase);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_IN_MEMORY_DATABASE_H_