Set extension-related webkit preferences in a common location.

chrome/browser/extensions/extension_webkit_preferences.h

Index: chrome/browser/extensions/extension_webkit_preferences.h
diff --git a/chrome/browser/extensions/extension_webkit_preferences.h b/chrome/browser/extensions/extension_webkit_preferences.h
new file mode 100644
index 0000000000000000000000000000000000000000..508e8a85868bbb6fca43ddd9ad673276f2fc0f80
--- /dev/null
+++ b/chrome/browser/extensions/extension_webkit_preferences.h
@@ -0,0 +1,17 @@
+// Copyright (c) 2011 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_BROWSER_EXTENSIONS_EXTENSION_WEBKIT_PREFERENCES_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_WEBKIT_PREFERENCES_H_
+
+class Extension;
+struct WebPreferences;
+
+namespace extension_webkit_preferences {
+
+void SetPreferences(WebPreferences* preferences, const Extension* extension);
+
+}  // namespace extension_webkit_preferences
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_WEBKIT_PREFERENCES_H_