Integrate external mount points to IsolatedContext

webkit/fileapi/local_file_system_operation.cc

Index: webkit/fileapi/local_file_system_operation.cc
diff --git a/webkit/fileapi/local_file_system_operation.cc b/webkit/fileapi/local_file_system_operation.cc
index 2f5a5e7923e97ae10f113c7835c9299cc204c1f4..a0f73b8574a9c905a13f9426997feb032cce02c6 100644
--- a/webkit/fileapi/local_file_system_operation.cc
+++ b/webkit/fileapi/local_file_system_operation.cc
@@ -722,7 +722,8 @@ base::PlatformFileError LocalFileSystemOperation::SetUp(
     return base::PLATFORM_FILE_ERROR_INVALID_URL;
 
   if (!file_system_context()->GetMountPointProvider(
-          url.type())->IsAccessAllowed(url.origin(), url.type(), url.path()))
+          url.type())->IsAccessAllowed(url.origin(), url.type(),
+                                       url.virtual_path()))
     return base::PLATFORM_FILE_ERROR_SECURITY;
 
   DCHECK(file_util);