Add a WebKit API that registers a V8 extension to be loaded into content

chrome/renderer/extension_groups.h

Index: chrome/renderer/extension_groups.h
diff --git a/chrome/renderer/extension_groups.h b/chrome/renderer/extension_groups.h
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index 0000000000000000000000000000000000000000..34d4c92fea5bf20ffa15a7ade97b59157dbee359
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+++ b/chrome/renderer/extension_groups.h
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+// Copyright (c) 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_RENDERER_EXTENSION_GROUPS_H_
+#define CHROME_RENDERER_EXTENSION_GROUPS_H_
+
+// A set of extension groups for use with WebKit::registerExtension and
+// WebFrame::ExecuteScriptInNewWorld to control which extensions get loaded
+// into which contexts.
+enum ExtensionGroups {
+  // Use this to mark extensions to be loaded into content scripts only.
+  EXTENSION_GROUP_CONTENT_SCRIPTS = 1,
+};
+
+
+#endif  // CHROME_RENDERER_EXTENSION_GROUPS_H_