Eliminate wstring from base/utf_offset_string_conversions.h, net/base/escape.h, and net/base/net_...

net/base/sdch_manager.cc

 // Copyright (c) 2011 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 "net/base/sdch_manager.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
@@ skipping 88 matching lines @@
   */
 
   // TODO(jar): Redirects in dictionary fetches might plausibly be problematic,
   // and hence the conservative approach is to not allow any redirects (if there
   // were any... then don't allow the dictionary to be set).
 
   if (domain.empty()) {
     SdchErrorRecovery(DICTIONARY_MISSING_DOMAIN_SPECIFIER);
     return false;  // Domain is required.
   }
-  if (RegistryControlledDomainService::GetDomainAndRegistry(domain).size()
-      == 0) {
+  if (RegistryControlledDomainService::GetDomainAndRegistry(domain).empty()) {
     SdchErrorRecovery(DICTIONARY_SPECIFIES_TOP_LEVEL_DOMAIN);
     return false;  // domain was a TLD.
   }
   if (!Dictionary::DomainMatch(dictionary_url, domain)) {
     SdchErrorRecovery(DICTIONARY_DOMAIN_NOT_MATCHING_SOURCE_URL);
     return false;
   }
 
   std::string referrer_url_host = dictionary_url.host();
   size_t postfix_domain_index = referrer_url_host.rfind(domain);
@@ skipping 420 matching lines @@
       case '/':
         (*output)[i] = '_';
         continue;
       default:
         continue;
     }
   }
 }
 
 }  // namespace net