enable -Wstring-conversion when compiling with clang

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/message_loop.h"
 #include "base/stl_util.h"
 #include "base/threading/thread.h"
@@ skipping 313 matching lines @@
 void WebDataService::RemoveAutofillProfilesAndCreditCardsModifiedBetween(
     const Time& delete_begin,
     const Time& delete_end) {
   ScheduleDBTask(FROM_HERE, Bind(
       &WebDataService::RemoveAutofillProfilesAndCreditCardsModifiedBetweenImpl,
       this, delete_begin, delete_end));
 }
 
 WebDataService::~WebDataService() {
   if (is_running_ && db_) {
-    DLOG_ASSERT("WebDataService dtor called without Shutdown");
-    NOTREACHED();
+    NOTREACHED() << "WebDataService dtor called without Shutdown";
   }
 }
 
 bool WebDataService::InitWithPath(const base::FilePath& path) {
   path_ = path;
   is_running_ = true;
 
   ScheduleTask(FROM_HERE,
                Bind(&WebDataService::InitializeDatabaseIfNecessary, this));
   ScheduleTask(FROM_HERE,
@@ skipping 600 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);
 }