Add Worker support for FileSystem API.

chrome/browser/file_system/file_system_host_context.h

 // Copyright (c) 2010 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_FILE_SYSTEM_FILE_SYSTEM_HOST_CONTEXT_H_
 #define CHROME_BROWSER_FILE_SYSTEM_FILE_SYSTEM_HOST_CONTEXT_H_
 
 #include "base/file_path.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
-#include "googleurl/src/gurl.h"
-#include "third_party/WebKit/WebKit/chromium/public/WebFileSystem.h"
+#include "webkit/fileapi/file_system_types.h"
+
+class GURL;
 
 // This is owned by profile and shared by all the FileSystemDispatcherHost
 // that shared by the same profile.
 class FileSystemHostContext
     : public base::RefCountedThreadSafe<FileSystemHostContext> {
  public:
   FileSystemHostContext(const FilePath& data_path, bool is_incognito);
   const FilePath& base_path() const { return base_path_; }
   bool is_incognito() const { return is_incognito_; }
 
   // Returns the root path and name for the file system specified by given
   // |origin_url| and |type|.  Returns true if the file system is available
   // for the profile and |root_path| and |name| are filled successfully.
-  bool GetFileSystemRootPath(
-      const GURL& origin_url,
-      WebKit::WebFileSystem::Type type,
-      FilePath* root_path,
-      std::string* name) const;
+  bool GetFileSystemRootPath(const GURL& origin_url,
+                             fileapi::FileSystemType type,
+                             FilePath* root_path,
+                             std::string* name) const;
 
   // Check if the given |path| is in the FileSystem base directory.
   bool CheckValidFileSystemPath(const FilePath& path) const;
 
   // Returns the storage identifier string for the given |url|.
   static std::string GetStorageIdentifierFromURL(const GURL& url);
 
   // The FileSystem directory name.
   static const FilePath::CharType kFileSystemDirectory[];
 
   static const char kPersistentName[];
   static const char kTemporaryName[];
 
  private:
   const FilePath base_path_;
   const bool is_incognito_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(FileSystemHostContext);
 };
 
 #endif  // CHROME_BROWSER_FILE_SYSTEM_FILE_SYSTEM_HOST_CONTEXT_H_