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

chrome/tools/crash_service/crash_service.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 "chrome/tools/crash_service/crash_service.h"
 
 #include <windows.h>
 
 #include <fstream>
 #include <map>
@@ skipping 22 matching lines @@
 bool CustomInfoToMap(const google_breakpad::ClientInfo* client_info,
                      const std::wstring& reporter_tag, CrashMap* map) {
   google_breakpad::CustomClientInfo info = client_info->GetCustomInfo();
 
   for (uintptr_t i = 0; i < info.count; ++i) {
     (*map)[info.entries[i].name] = info.entries[i].value;
   }
 
   (*map)[L"rept"] = reporter_tag;
 
-  return (map->size() > 0);
+  return !map->empty();
 }
 
 bool WriteCustomInfoToFile(const std::wstring& dump_path, const CrashMap& map) {
   std::wstring file_path(dump_path);
   size_t last_dot = file_path.rfind(L'.');
   if (last_dot == std::wstring::npos)
     return false;
   file_path.resize(last_dot);
   file_path += L".txt";
 
@@ skipping 416 matching lines @@
                                                              SDDL_REVISION,
                                                              &sec_desc, NULL)) {
     if (::GetSecurityDescriptorSacl(sec_desc, &sacl_present, &sacl,
                                     &sacl_defaulted)) {
       return sec_desc;
     }
   }
 
   return NULL;
 }