Add base:: to string16s in win8/.

win8/delegate_execute/crash_server_init.cc

Index: win8/delegate_execute/crash_server_init.cc
diff --git a/win8/delegate_execute/crash_server_init.cc b/win8/delegate_execute/crash_server_init.cc
index 76893164294c16338b78a283e603f93dbf17d9dd..646c57bbba58beedccc13214952963a2d66e4234 100644
--- a/win8/delegate_execute/crash_server_init.cc
+++ b/win8/delegate_execute/crash_server_init.cc
@@ -70,12 +70,12 @@ scoped_ptr<google_breakpad::ExceptionHandler> InitializeCrashReporting() {
   wchar_t temp_path[MAX_PATH + 1] = {0};
   DWORD path_len = ::GetTempPath(MAX_PATH, temp_path);
 
-  string16 pipe_name;
+  base::string16 pipe_name;
   pipe_name = kGoogleUpdatePipeName;
   if (IsRunningSystemInstall()) {
     pipe_name += kSystemPrincipalSid;
   } else {
-    string16 user_sid;
+    base::string16 user_sid;
     if (base::win::GetUserSidString(&user_sid)) {
       pipe_name += user_sid;
     } else {