kFileSystemTypeIsolated should be only used in the URL exposed to renderer

chrome/renderer/extensions/file_system_natives.cc

 // 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.
 
 #include "chrome/renderer/extensions/file_system_natives.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
@@ skipping 16 matching lines @@
   WebKit::WebFrame* webframe = WebKit::WebFrame::frameForCurrentContext();
   DCHECK(webframe);
 
   GURL context_url =
       extensions::UserScriptSlave::GetDataSourceURLForFrame(webframe);
   CHECK(context_url.SchemeIs(chrome::kExtensionScheme));
 
   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("/");
 
   return webframe->createFileSystem(
       WebKit::WebFileSystem::TypeIsolated,
       WebKit::WebString::fromUTF8(name.c_str()),
       WebKit::WebString::fromUTF8(root.c_str()));
 }
 
 }  // namespace
 
 namespace extensions {
 
 FileSystemNatives::FileSystemNatives()
     : ChromeV8Extension(NULL) {
   RouteStaticFunction("GetIsolatedFileSystem", &GetIsolatedFileSystem);
 }
 
 }  // namespace extensions