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

net/base/sdch_manager.cc

Index: net/base/sdch_manager.cc
===================================================================
--- net/base/sdch_manager.cc	(revision 82762)
+++ net/base/sdch_manager.cc	(working copy)
@@ -106,8 +106,7 @@
     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.
   }