Add concept of an options page to Extensions....

chrome/common/extensions/extension.h

Index: chrome/common/extensions/extension.h
===================================================================
--- chrome/common/extensions/extension.h	(revision 29288)
+++ chrome/common/extensions/extension.h	(working copy)
@@ -195,6 +195,7 @@
   }
   const std::vector<PluginInfo>& plugins() const { return plugins_; }
   const GURL& background_url() const { return background_url_; }
+  const GURL& options_url() const { return options_url_; }
   const std::vector<ToolstripInfo>& toolstrips() const { return toolstrips_; }
   const std::vector<std::string>& api_permissions() const {
     return api_permissions_;
@@ -334,6 +335,9 @@
   // loaded in the background.
   GURL background_url_;
 
+  // Optional URL to a page for setting options/preferences.
+  GURL options_url_;
+
   // Optional list of toolstrips_ and associated properties.
   std::vector<ToolstripInfo> toolstrips_;