Do not return FileSystem contents if the profile is in incognito mode.

webkit/browser/fileapi/sandbox_file_system_backend.h

Index: webkit/browser/fileapi/sandbox_file_system_backend.h
diff --git a/webkit/browser/fileapi/sandbox_file_system_backend.h b/webkit/browser/fileapi/sandbox_file_system_backend.h
index cefebc79e717bcd29d10a077d11e25488e0b38f4..8531cf862bfa3ef7ab76eff92e097156d85df7eb 100644
--- a/webkit/browser/fileapi/sandbox_file_system_backend.h
+++ b/webkit/browser/fileapi/sandbox_file_system_backend.h
@@ -66,6 +66,10 @@ class WEBKIT_STORAGE_BROWSER_EXPORT SandboxFileSystemBackend
   void set_enable_temporary_file_system_in_incognito(bool enable) {
     enable_temporary_file_system_in_incognito_ = enable;
   }
+  bool enable_temporary_file_system_in_incognito() const {
+    return enable_temporary_file_system_in_incognito_;
+  }
+
 
  private:
   SandboxFileSystemBackendDelegate* delegate_;  // Not owned.