First pass at experimental omnibox API. There are plenty of rough edges and

chrome/browser/search_engines/template_url.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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_SEARCH_ENGINES_TEMPLATE_URL_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/time.h"
@@ skipping 402 matching lines @@
   }
 
   // Returns the unique identifier of this TemplateURL. The unique ID is set
   // by the TemplateURLModel when the TemplateURL is added to it.
   IDType id() const { return id_; }
 
   // If this TemplateURL comes from prepopulated data the prepopulate_id is > 0.
   void set_prepopulate_id(int id) { prepopulate_id_ = id; }
   int prepopulate_id() const { return prepopulate_id_; }
 
+  std::string GetExtensionId() const;
+  bool IsExtensionKeyword() const;
+
  private:
   friend class WebDatabaseTest;
   friend class WebDatabase;
   friend class TemplateURLModel;
 
   // Invalidates cached values on this object and its child TemplateURLRefs.
   void InvalidateCachedValues() const;
 
   // Unique identifier, used when archived to the database.
   void set_id(IDType id) { id_ = id;}
@@ skipping 17 matching lines @@
   std::vector<std::string> input_encodings_;
   IDType id_;
   base::Time date_created_;
   int usage_count_;
   int prepopulate_id_;
 
   // TODO(sky): Add date last parsed OSD file.
 };
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_