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extensions/common/extension_urls.h

Index: extensions/common/extension_urls.h
diff --git a/extensions/common/extension_urls.h b/extensions/common/extension_urls.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 EXTENSIONS_COMMON_EXTENSION_URLS_H_
+#define EXTENSIONS_COMMON_EXTENSION_URLS_H_
+
+#include "base/strings/string16.h"
+
+namespace extensions {
+
+// Determine whether or not a source came from an extension. |source| can link
+// to a page or a script, and can be external (e.g., "http://www.google.com"),
+// extension-related (e.g., "chrome-extension://<extension_id>/background.js"),
+// or internal (e.g., "event_bindings" or "schemaUtils").
+bool IsSourceFromAnExtension(const base::string16& source);
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_COMMON_EXTENSION_URLS_H_