Parsing filesystem url before giving it to media player

content/browser/fileapi/browser_file_system_helper.h

 // 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.
 
 #ifndef CONTENT_BROWSER_FILEAPI_BROWSER_FILE_SYSTEM_HELPER_H_
 #define CONTENT_BROWSER_FILEAPI_BROWSER_FILE_SYSTEM_HELPER_H_
 
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "webkit/fileapi/file_system_context.h"
 
 namespace fileapi {
 class ExternalMountPoints;
+class FileSystemContext;
+class FileSystemURL;
 }
 
 namespace quota {
 class SpecialStoragePolicy;
 }
 
 namespace content {
 
 // Helper method that returns FileSystemContext constructed for
 // the browser process.
 CONTENT_EXPORT scoped_refptr<fileapi::FileSystemContext>
 CreateFileSystemContext(
     const base::FilePath& profile_path,
     bool is_incognito,
     fileapi::ExternalMountPoints* external_mount_points,
     quota::SpecialStoragePolicy* special_storage_policy,
     quota::QuotaManagerProxy* quota_manager_proxy);
 
+// Check whether a process has permission to access the file system URL.
+CONTENT_EXPORT bool CheckFileSystemPermissionsForProcess(
+    fileapi::FileSystemContext* context,
+    int process_id,
+    const fileapi::FileSystemURL& url,
+    int permissions,
+    base::PlatformFileError* error);
+
+// Get the platform path from a file system URL. This needs to be called
+// on the FILE thread.
+CONTENT_EXPORT void SyncGetPlatformPath(fileapi::FileSystemContext* context,
+                                        int process_id,
+                                        const GURL& path,
+                                        base::FilePath* platform_path);
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FILEAPI_BROWSER_FILE_SYSTEM_HELPER_H_