Discard duplicate includes of files from storage

storage/browser/fileapi/isolated_context.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 "storage/browser/fileapi/isolated_context.h"
 
-#include "base/basictypes.h"
-#include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/rand_util.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "storage/browser/fileapi/file_system_url.h"
 
 namespace storage {
 
@@ skipping 456 matching lines @@
   uint32 random_data[4];
   std::string id;
   do {
     base::RandBytes(random_data, sizeof(random_data));
     id = base::HexEncode(random_data, sizeof(random_data));
   } while (instance_map_.find(id) != instance_map_.end());
   return id;
 }
 
 }  // namespace storage