kFileSystemTypeIsolated should be only used in the URL exposed to renderer

chrome/renderer/extensions/file_system_natives.cc

Index: chrome/renderer/extensions/file_system_natives.cc
diff --git a/chrome/renderer/extensions/file_system_natives.cc b/chrome/renderer/extensions/file_system_natives.cc
index 88faeba421084326a86f62e7a306678b0a0621a2..ff34be7965c977d508256e50463d278d6d7a7517 100644
--- a/chrome/renderer/extensions/file_system_natives.cc
+++ b/chrome/renderer/extensions/file_system_natives.cc
@@ -34,8 +34,9 @@ static v8::Handle<v8::Value> GetIsolatedFileSystem(
   std::string name(fileapi::GetIsolatedFileSystemName(context_url.GetOrigin(),
                                                       file_system_id));
 
-  std::string root(fileapi::GetFileSystemRootURI(context_url.GetOrigin(),
-      fileapi::kFileSystemTypeIsolated).spec());
+  std::string root(fileapi::GetFileSystemRootURI(
+          context_url.GetOrigin(),
+          fileapi::kFileSystemTypeIsolated).spec());
   root.append(file_system_id);
   root.append("/");