Remove the "autogenerate keyword" bit on TemplateURL.

sync/protocol/search_engine_specifics.proto

 // 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.
 //
 // Sync protocol datatype extension for custom search engines.
 
 // Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
 // any fields in this file.
 
 syntax = "proto2";
@@ skipping 23 matching lines @@
   optional int64 date_created = 7;
   // A list of supported input encodings.
   optional string input_encodings = 8;
   // Whether this entry is shown in the list of default search engines or not.
   optional bool show_in_default_list = 9;
   // The parameterized URL that provides suggestions as the user types.
   optional string suggestions_url = 10;
   // 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
   // entry was created automatically by an administrator via group policy. This
   // notion no longer exists amongst synced search engines as we do not want to
   // sync managed search engines.
   // optional bool deprecated_created_by_policy = 14;
   // The parameterized URL that is used for Instant results.
   optional string instant_url = 15;
   // ID 16 reserved - previously used by |id|, now deprecated.
   // The last time this entry was modified by a user. A UTC timestamp with units
   // in microseconds.
   optional int64 last_modified = 17;
   // The primary identifier of this search engine entry for Sync.
   optional string sync_guid = 18;
 }