Change other usages of .size() to .empty() when applicable.

net/socket/ssl_host_info.cc

 // Copyright (c) 2010 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/socket/ssl_host_info.h"
 
 #include "base/metrics/histogram.h"
 #include "base/pickle.h"
 #include "base/string_piece.h"
 #include "net/base/dns_util.h"
@@ skipping 97 matching lines @@
 
   if (state->npn_valid) {
     int status;
     if (!p.ReadInt(&iter, &status) ||
         !p.ReadString(&iter, &state->npn_protocol)) {
       return false;
     }
     state->npn_status = static_cast<SSLClientSocket::NextProtoStatus>(status);
   }
 
-  if (state->certs.size() > 0) {
+  if (!state->certs.empty()) {
     std::vector<base::StringPiece> der_certs(state->certs.size());
     for (size_t i = 0; i < state->certs.size(); i++)
       der_certs[i] = state->certs[i];
     cert_ = X509Certificate::CreateFromDERCertChain(der_certs);
     if (cert_.get()) {
       int flags = 0;
       if (verify_ev_cert_)
         flags |= X509Certificate::VERIFY_EV_CERT;
       if (rev_checking_enabled_)
         flags |= X509Certificate::VERIFY_REV_CHECKING_ENABLED;
@@ skipping 78 matching lines @@
   if (cert_verification_callback_) {
     CompletionCallback* callback = cert_verification_callback_;
     cert_verification_callback_ = NULL;
     callback->Run(rv);
   }
 }
 
 SSLHostInfoFactory::~SSLHostInfoFactory() {}
 
 }  // namespace net