Remove the "autogenerate keyword" bit on TemplateURL.

sync/protocol/search_engine_specifics.proto

Index: sync/protocol/search_engine_specifics.proto
===================================================================
--- sync/protocol/search_engine_specifics.proto	(revision 135424)
+++ sync/protocol/search_engine_specifics.proto	(working copy)
@@ -41,7 +41,8 @@
   // The ID associated with the prepopulate data this search engine comes from.
   // Set to zero if it was not prepopulated.
   optional int32 prepopulate_id = 11;
-  // Whether to autogenerate a keyword for the search engine or not.
+  // DEPRECATED: Whether to autogenerate a keyword for the search engine or not.
+  // Do not use this field in the future.

[Nicolas Zea, 2012/05/08 00:51:03]

Nit: Change to "do not write to this field" and mention that we keep the
definition around for so we can migrate from old versions.

[Peter Kasting, 2012/05/08 01:31:42]

Done.

   optional bool autogenerate_keyword = 12;
   // ID 13 reserved - previously used by |logo_id|, now deprecated.
   // Obsolete field. This used to represent whether or not this search engine