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diff --git a/chromium/gin/modules/file_module_provider.h b/chromium/gin/modules/file_module_provider.h
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+++ b/chromium/gin/modules/file_module_provider.h
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+// 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.
+
+#ifndef GIN_MODULES_FILE_MODULE_PROVIDER_H_
+#define GIN_MODULES_FILE_MODULE_PROVIDER_H_
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "base/files/file_path.h"
+#include "gin/gin_export.h"
+#include "gin/runner.h"
+
+namespace gin {
+
+// FileModuleProvider knows how to load AMD modules off disk. It searches for
+// modules in the directories indiciated by |search_paths|. Although we still
+// read from the file system on the main thread, we'll eventually want to move
+// the reads to a background thread.
+class GIN_EXPORT FileModuleProvider {
+ public:
+  explicit FileModuleProvider(
+      const std::vector<base::FilePath>& search_paths);
+  ~FileModuleProvider();
+
+  // Searches for modules with |ids| in the file system. If found, the modules
+  // will be executed asynchronously by |runner|.
+  void AttempToLoadModules(Runner* runner, const std::set<std::string>& ids);
+
+ private:
+  std::vector<base::FilePath> search_paths_;
+
+  // We'll only search for a given module once. We remember the set of modules
+  // we've already looked for in |attempted_ids_|.
+  std::set<std::string> attempted_ids_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileModuleProvider);
+};
+
+}  // namespace gin
+
+#endif  // GIN_MODULES_FILE_MODULE_PROVIDER_H_