base/win: small improvement to RegKey API.

chrome/installer/util/google_update_settings.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 "chrome/installer/util/google_update_settings.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/path_service.h"
@@ skipping 84 matching lines @@
   std::wstring value;
   if (key.ReadValue(name, &value) != ERROR_SUCCESS)
     return false;
   return (key.WriteValue(name, L"") == ERROR_SUCCESS);
 }
 
 bool RemoveGoogleUpdateStrKey(const wchar_t* const name) {
   BrowserDistribution* dist = BrowserDistribution::GetDistribution();
   std::wstring reg_path = dist->GetStateKey();
   RegKey key(HKEY_CURRENT_USER, reg_path.c_str(), KEY_READ | KEY_WRITE);
-  if (!key.ValueExists(name))
+  if (!key.HasValue(name))
     return true;
   return (key.DeleteValue(name) == ERROR_SUCCESS);
 }
 
 EulaSearchResult HasEULASetting(HKEY root, const std::wstring& state_key,
                                 bool setting) {
   RegKey key;
   DWORD previous_value = setting ? 1 : 0;
   if (key.Open(root, state_key.c_str(), KEY_QUERY_VALUE) != ERROR_SUCCESS)
     return NO_SETTING;
@@ skipping 403 matching lines @@
       GetUpdatePolicyFromDword(value, &update_policy);
     }
   }
 #endif  // defined(GOOGLE_CHROME_BUILD)
 
   if (is_overridden != NULL)
     *is_overridden = found_override;
 
   return update_policy;
 }