Added new fileBrowserPrivate and fileHandler extension APIs

webkit/fileapi/sandbox_mount_point_provider.h

Index: webkit/fileapi/sandbox_mount_point_provider.h
===================================================================
--- webkit/fileapi/sandbox_mount_point_provider.h	(revision 80410)
+++ webkit/fileapi/sandbox_mount_point_provider.h	(working copy)
@@ -6,6 +6,7 @@
 #define WEBKIT_FILEAPI_SANDBOX_MOUNT_POINT_PROVIDER_H_
 
 #include <string>
+#include <vector>
 
 #include "base/file_path.h"
 #include "googleurl/src/gurl.h"
@@ -61,6 +62,10 @@
   // Checks if a given |name| contains any restricted names/chars in it.
   virtual bool IsRestrictedFileName(const FilePath& filename) const;
 
+  virtual std::vector<FilePath> GetRootDirectories() const {
+    return  std::vector<FilePath>();
+  }
+
   // Returns the origin identifier string, which is used as a part of the
   // sandboxed path component, for the given |url|.
   static std::string GetOriginIdentifierFromURL(const GURL& url);