sync: remove use of protobuf extensions in protocol to reduce static init overhead.

chrome/browser/sync/test/integration/sync_test.cc

 // 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.
 
 #include "chrome/browser/sync/test/integration/sync_test.h"
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 622 matching lines @@
 void SyncTest::TriggerMigrationDoneError(
     syncable::ModelTypeSet model_types) {
   ASSERT_TRUE(ServerSupportsErrorTriggering());
   std::string path = "chromiumsync/migrate";
   char joiner = '?';
   for (syncable::ModelTypeSet::Iterator it = model_types.First();
        it.Good(); it.Inc()) {
     path.append(
         base::StringPrintf(
             "%ctype=%d", joiner,
-            syncable::GetExtensionFieldNumberFromModelType(it.Get())));
+            syncable::GetSpecificsFieldNumberFromModelType(it.Get())));
     joiner = '&';
   }
   ui_test_utils::NavigateToURL(browser(), sync_server_.GetURL(path));
   ASSERT_EQ("Migration: 200",
             UTF16ToASCII(browser()->GetSelectedWebContents()->GetTitle()));
 }
 
 void SyncTest::TriggerBirthdayError() {
   ASSERT_TRUE(ServerSupportsErrorTriggering());
   std::string path = "chromiumsync/birthdayerror";
@@ skipping 104 matching lines @@
 
 void SyncTest::SetProxyConfig(net::URLRequestContextGetter* context_getter,
                               const net::ProxyConfig& proxy_config) {
   base::WaitableEvent done(false, false);
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&SetProxyConfigCallback, &done,
                  make_scoped_refptr(context_getter), proxy_config));
   done.Wait();
 }