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diff --git a/chrome/common/bindings_policy.h b/chrome/common/bindings_policy.h
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+// Copyright (c) 2006-2009 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 CHROME_COMMON_BINDINGS_POLICY_H__
+#define CHROME_COMMON_BINDINGS_POLICY_H__
+
+// This is a utility class that specifies flag values for the types of
+// JavaScript bindings exposed to renderers.
+class BindingsPolicy {
+ public:
+  enum {
+    // HTML-based UI bindings that allows he js content to send JSON-encoded
+    // data back to the browser process.
+    DOM_UI = 1 << 0,
+    // DOM automation bindings that allows the js content to send JSON-encoded
+    // data back to automation in the parent process.  (By default this isn't
+    // allowed unless the app has been started up with the --dom-automation
+    // switch.)
+    DOM_AUTOMATION = 1 << 1,
+    // Bindings that allow access to the external host (through automation).
+    EXTERNAL_HOST = 1 << 2,
+    // Special bindings with privileged APIs for code running in the extension
+    // process.
+    EXTENSION = 1 << 3,
+  };
+
+  static bool is_dom_ui_enabled(int flags) {
+    return (flags & DOM_UI) != 0;
+  }
+  static bool is_dom_automation_enabled(int flags) {
+    return (flags & DOM_AUTOMATION) != 0;
+  }
+  static bool is_external_host_enabled(int flags) {
+    return (flags & EXTERNAL_HOST) != 0;
+  }
+  static bool is_extension_enabled(int flags) {
+    return (flags & EXTENSION) != 0;
+  }
+};
+
+#endif  // CHROME_COMMON_BINDINGS_POLICY_H__