Linux: change protobuf default option to allow building

chrome/browser/safe_browsing/report.proto

 // 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.
 //
 // Safe Browsing reporting protocol buffers.
 //
 // A ClientMalwareReportRequest is sent when a user opts-in to 
 // sending detailed malware reports from the safe browsing interstitial page.
 // 
 // It is a list of Resource messages, which may contain the url of a
 // resource such as the page in the address bar or any other resource
 // that was loaded for this page.
 //
 // In addition to the url, a resource can contain HTTP request and response
 // headers and bodies.
 
 syntax = "proto2";
 
-option optimize_for = LITE_RUNTIME;
-
 package safe_browsing;
 
 message ClientMalwareReportRequest {
 
   message HTTPHeader {
     required bytes name = 1;
     optional bytes value = 2;
   }
 
   message HTTPRequest {
@@ skipping 53 matching lines @@
 
   // URL of the page in the address bar.
   optional string page_url = 2;
 
   optional string referrer_url = 3;
   repeated Resource resources = 4;
 
   // Whether the report has HTTP Responses.
   optional bool complete = 5;
 }