Add symbolic link support to FileSystemFileUtil::AbstractFileEnumerator.

webkit/fileapi/file_system_file_util.h

Index: webkit/fileapi/file_system_file_util.h
diff --git a/webkit/fileapi/file_system_file_util.h b/webkit/fileapi/file_system_file_util.h
index 2cc79d4f85f281441ef1ff8ff028234daff5c735..0e8f41e1efa52fccc709958ec22f9ac5571fd8ed 100644
--- a/webkit/fileapi/file_system_file_util.h
+++ b/webkit/fileapi/file_system_file_util.h
@@ -38,6 +38,7 @@ class FileSystemFileUtil {
     virtual int64 Size() = 0;
     virtual base::Time LastModifiedTime() = 0;
     virtual bool IsDirectory() = 0;
+    virtual bool IsLink() = 0;
   };
 
   class EmptyFileEnumerator : public AbstractFileEnumerator {
@@ -45,6 +46,7 @@ class FileSystemFileUtil {
     virtual int64 Size() OVERRIDE { return 0; }
     virtual base::Time LastModifiedTime() OVERRIDE { return base::Time(); }
     virtual bool IsDirectory() OVERRIDE { return false; }
+    virtual bool IsLink() OVERRIDE { return false; }
   };
 
   virtual ~FileSystemFileUtil();