Declarative content scripts: Browser-side: per-extension shared memory regions (lazily loaded)

extensions/common/user_script.cc

 // Copyright 2013 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 "extensions/common/user_script.h"
 
 #include "base/command_line.h"
 #include "base/pickle.h"
 #include "base/strings/string_util.h"
 #include "extensions/common/switches.h"
@@ skipping 222 matching lines @@
   uint64 num_files = 0;
   CHECK(pickle.ReadUInt64(iter, &num_files));
   scripts->clear();
   for (uint64 i = 0; i < num_files; ++i) {
     File file;
     file.Unpickle(pickle, iter);
     scripts->push_back(file);
   }
 }
 
+bool operator<(const UserScript& script1, const UserScript& script2) {
+  // The only kind of script that should be compared is the kind that has its
+  // IDs initialized to a meaningful value.
+  DCHECK(script1.id() != -1 && script2.id() != -1);
+  return script1.id() < script2.id();
+}
+
 }  // namespace extensions