Linux: change protobuf default option to allow building

chrome/browser/feedback/proto/config.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.
 
 // Messages containing configuration of Feedback Service
 // that control classification and processing of submitted feedbacks.
 
 syntax = "proto2";
 
-option optimize_for = LITE_RUNTIME;
-
 package userfeedback;
 
 // Product for which feedback can be sent: GMail, Writely etc.
 message Product {
   required int32 id = 1;
 
   required string name = 2;
 
   repeated string owner = 3;
 };
@@ skipping 111 matching lines @@
 message MatcherData {
   // XPATH expression to match against page.
   required string content_matcher = 1;
 
   // Regexp matching page URL.
   required string url_matcher = 2;
 
   // Approval by feedback admins
   optional bool url_matcher_approved = 3 [default=true];
 };