Pull ChildProcessSecurityPolicyImpl out to shared subfolder

content/browser/fileapi/browser_file_system_helper.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 "content/browser/fileapi/browser_file_system_helper.h"
 
 #include <stddef.h>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/sequenced_task_runner.h"
 #include "base/threading/sequenced_worker_pool.h"
-#include "content/browser/child_process_security_policy_impl.h"
+#include "content/browser/shared/child_process_security_policy_helper.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "storage/browser/fileapi/external_mount_points.h"
 #include "storage/browser/fileapi/file_permission_policy.h"
 #include "storage/browser/fileapi/file_system_backend.h"
 #include "storage/browser/fileapi/file_system_context.h"
 #include "storage/browser/fileapi/file_system_operation_runner.h"
@@ skipping 99 matching lines @@
   context->operation_runner()->SyncGetPlatformPath(url, platform_path);
 
   // The path is to be attached to URLLoader so we grant read permission
   // for the file. (We need to check first because a parent directory may
   // already have the permissions and we don't need to grant it to the file.)
   if (!policy->CanReadFile(process_id, *platform_path))
     policy->GrantReadFile(process_id, *platform_path);
 }
 
 }  // namespace content