FileAPI: Add WebFileSystem::resolveURL

public/platform/WebFileSystemCallbacks.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 48 matching lines @@
     // Callback for WebFileSystem::readDirectory. Called with a vector of
     // file entries in the requested directory. This callback might be called
     // multiple times if the directory has many entries. |hasMore| must be
     // true when there are more entries.
     virtual void didReadDirectory(const WebVector<WebFileSystemEntry>&, bool hasMore) = 0;
 
     // Callback for WebFileSystem::openFileSystem. Called with a name and
     // root URL for the FileSystem when the request is accepted.
     virtual void didOpenFileSystem(const WebString& name, const WebURL& rootURL) = 0;
 
+    // Callback for WebFileSystem::resolveURL. Called with a name, root URL and
+    // file path for the FileSystem when the request is accepted. |isDirectory|
+    // must be true when an entry to be resolved is a directory.
+    virtual void didResolveURL(const WebString& name, const WebURL& rootURL, const WebString& filePath, bool isDirectory) = 0;
+
     // Callback for WebFileSystem::createFileWriter. Called with an instance
     // of WebFileWriter and the target file length. The writer's ownership
     // is transferred to the callback.
     virtual void didCreateFileWriter(WebFileWriter* writer, long long length) { WEBKIT_ASSERT_NOT_REACHED(); }
 
     // Called with an error code when a requested operation hasn't been
     // completed.
     virtual void didFail(WebFileError) = 0;
 
     // Returns true if the caller expects to be blocked until the request
     // is fullfilled.
     virtual bool shouldBlockUntilCompletion() const = 0;
 
 protected:
     virtual ~WebFileSystemCallbacks() { }
 };
 
 } // namespace WebKit
 
 #endif