Do not initialize sync or policy on import process.

chrome/browser/webdata/web_data_service.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/webdata/web_data_service.h"
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
 #include "base/threading/thread.h"
 #include "chrome/browser/autofill/autofill_country.h"
 #include "chrome/browser/autofill/autofill_profile.h"
 #include "chrome/browser/autofill/credit_card.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/ui/profile_error_dialog.h"
 #include "chrome/browser/webdata/autocomplete_syncable_service.h"
 #include "chrome/browser/webdata/autofill_change.h"
 #include "chrome/browser/webdata/autofill_entry.h"
 #include "chrome/browser/webdata/autofill_profile_syncable_service.h"
 #include "chrome/browser/webdata/autofill_table.h"
 #include "chrome/browser/webdata/keyword_table.h"
 #include "chrome/browser/webdata/logins_table.h"
 #include "chrome/browser/webdata/token_service_table.h"
@@ skipping 56 matching lines @@
       request_manager_(new WebDataRequestManager()),
       app_locale_(AutofillCountry::ApplicationLocale()),
       autocomplete_syncable_service_(NULL),
       autofill_profile_syncable_service_(NULL),
       failed_init_(false),
       should_commit_(false),
       main_loop_(MessageLoop::current()) {
   // WebDataService requires DB thread if instantiated.
   // Set WebDataServiceFactory::GetInstance()->SetTestingFactory(&profile, NULL)
   // if you do not want to instantiate WebDataService in your test.
+  DCHECK(!ProfileManager::IsImportProcess(*CommandLine::ForCurrentProcess()));

[Peter Kasting, 2013/02/22 19:57:56]

Nit: The comment above is for the statement below.  Move this above or below and
give it its own comment about why we need to ensure this isn't the import
process (or simply refer to an explanatory comment elsewhere).

   DCHECK(BrowserThread::IsWellKnownThread(BrowserThread::DB));
 }
 
 // static
 void WebDataService::NotifyOfMultipleAutofillChanges(
     WebDataService* web_data_service) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
 
   if (!web_data_service)
     return;
@@ skipping 845 matching lines @@
 
 void WebDataService::DestroyAutofillCreditCardResult(
       const WDTypedResult* result) {
   DCHECK(result->GetType() == AUTOFILL_CREDITCARDS_RESULT);
   const WDResult<std::vector<CreditCard*> >* r =
       static_cast<const WDResult<std::vector<CreditCard*> >*>(result);
 
   std::vector<CreditCard*> credit_cards = r->GetValue();
   STLDeleteElements(&credit_cards);
 }