kFileSystemTypeIsolated should be only used in the URL exposed to renderer

webkit/fileapi/file_system_util.h

Index: webkit/fileapi/file_system_util.h
diff --git a/webkit/fileapi/file_system_util.h b/webkit/fileapi/file_system_util.h
index af48b8023cb0c2ca0803fe7b65cca496da167927..d6d45ccf57226b5d3e63bd3da76dcf344a361532 100644
--- a/webkit/fileapi/file_system_util.h
+++ b/webkit/fileapi/file_system_util.h
@@ -66,6 +66,8 @@ class FILEAPI_EXPORT VirtualPath {
 //
 // For Isolated filesystem this returns the 'common' root part, e.g.
 // returns URL without the filesystem ID.
+//
+// |type| needs to be public type as the returned URI is given to the renderer.
 FILEAPI_EXPORT GURL GetFileSystemRootURI(const GURL& origin_url,
                                          FileSystemType type);
 
@@ -75,6 +77,8 @@ FILEAPI_EXPORT GURL GetFileSystemRootURI(const GURL& origin_url,
 // but can be read as the .name field of the returned FileSystem object
 // as a user-friendly name in the javascript layer).
 //
+// |type| needs to be public type as the returned name is given to the renderer.
+//
 // Example:
 //   The name for a TEMPORARY filesystem of "http://www.example.com:80/"
 //   should look like: "http_www.example.host_80:temporary"