Move fileapi into its own component

webkit/fileapi/file_system_file_util.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 WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_H_
 
 #include "base/file_path.h"
 #include "base/file_util_proxy.h"
 #include "base/platform_file.h"
+#include "webkit/fileapi/fileapi_export.h"
 #include "webkit/fileapi/file_system_path.h"
 
 namespace base {
 class Time;
 }
 
 namespace fileapi {
 
 using base::PlatformFile;
 using base::PlatformFileError;
 class FileSystemOperationContext;
 
 // A file utility interface that provides basic file utility methods for
 // FileSystem API.
 //
 // Layering structure of the FileSystemFileUtil was split out.
 // See http://crbug.com/128136 if you need it.
-class FileSystemFileUtil {
+class FILEAPI_EXPORT FileSystemFileUtil {
  public:
   // It will be implemented by each subclass such as FileSystemFileEnumerator.
   class AbstractFileEnumerator {
    public:
     virtual ~AbstractFileEnumerator() {}
 
     // Returns an empty string if there are no more results.
     virtual FilePath Next() = 0;
 
     virtual int64 Size() = 0;
@@ skipping 137 matching lines @@
  protected:
   FileSystemFileUtil() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FileSystemFileUtil);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_H_