SupportsUserData and manifest handlers for Extension; use them for the Omnibox API.

chrome/common/extensions/api/omnibox/omnibox_handler.h

Index: chrome/common/extensions/api/omnibox/omnibox_handler.h
diff --git a/chrome/common/extensions/api/omnibox/omnibox_handler.h b/chrome/common/extensions/api/omnibox/omnibox_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..d3efed08886674776281a57d6eb37698d1c19209
--- /dev/null
+++ b/chrome/common/extensions/api/omnibox/omnibox_handler.h
@@ -0,0 +1,43 @@
+// Copyright (c) 2012 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_EXTENSIONS_API_OMNIBOX_OMNIBOX_HANDLER_H_
+#define CHROME_COMMON_EXTENSIONS_API_OMNIBOX_OMNIBOX_HANDLER_H_
+
+#include <string>
+
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/manifest_handler.h"
+
+namespace extensions {
+
+class Extension;
+
+struct OmniboxInfo : public Extension::ManifestData {
+  // The Omnibox keyword for an extension.
+  std::string keyword;
+
+  // Returns the omnibox keyword for the extension.
+  static const std::string& GetKeyword(const Extension* extension);
+
+  // Returns true if the extension needs a verbose install message.
+  // TODO(yoz): This should be associated with page actions, not
+  // the omnibox.
+  static bool IsVerboseInstallMessage(const Extension* extension);
+};
+
+// Parses the "omnibox" manifest key.
+class OmniboxHandler : public ManifestHandler {
+ public:
+  OmniboxHandler();
+  virtual ~OmniboxHandler();
+
+  virtual bool Parse(const base::Value* value,
+                     Extension* extension,
+                     string16* error) OVERRIDE;
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_COMMON_EXTENSIONS_API_OMNIBOX_OMNIBOX_HANDLER_H_