Cleanup file permission check code in FileAPIMessageFilter

webkit/fileapi/sandbox_mount_point_provider.cc

Index: webkit/fileapi/sandbox_mount_point_provider.cc
diff --git a/webkit/fileapi/sandbox_mount_point_provider.cc b/webkit/fileapi/sandbox_mount_point_provider.cc
index 8ffd14421a23144a464e2d87f40a90aef0ab319f..0ed81b493e24e375c226d77c14421e498bff5062 100644
--- a/webkit/fileapi/sandbox_mount_point_provider.cc
+++ b/webkit/fileapi/sandbox_mount_point_provider.cc
@@ -255,11 +255,13 @@ FileSystemFileUtil* SandboxMountPointProvider::GetFileUtil(
   return sandbox_file_util_.get();
 }
 
-FilePath SandboxMountPointProvider::GetPathForPermissionsCheck(
-    const FilePath& virtual_path) const {
-  // Sandbox provider shouldn't directly grant permissions for its
-  // data directory.
-  return FilePath();
+FilePermissionPolicy SandboxMountPointProvider::GetPermissionPolicy(
+    const FileSystemURL& url, int permissions) const {
+  // Access to the sandbox directory (and only to the directory) should be
+  // always allowed.
+  CHECK(CanHandleType(url.type()));
+  CHECK(!url.path().ReferencesParent());
+  return FILE_PERMISSION_ALWAYS_ALLOW;
 }
 
 FileSystemOperation* SandboxMountPointProvider::CreateFileSystemOperation(