base/win: small improvement to RegKey API.

chrome/installer/util/delete_reg_value_work_item_unittest.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 <windows.h>
 
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_util.h"
 #include "base/win/registry.h"
@@ skipping 53 matching lines @@
       WorkItem::CreateDeleteRegValueWorkItem(HKEY_CURRENT_USER, parent_key,
                                              name_dword));
   scoped_ptr<DeleteRegValueWorkItem> work_item3(
       WorkItem::CreateDeleteRegValueWorkItem(HKEY_CURRENT_USER, parent_key,
                                              name_empty));
 
   EXPECT_TRUE(work_item1->Do());
   EXPECT_TRUE(work_item2->Do());
   EXPECT_TRUE(work_item3->Do());
 
-  EXPECT_FALSE(key.ValueExists(name_str.c_str()));
-  EXPECT_FALSE(key.ValueExists(name_dword.c_str()));
-  EXPECT_FALSE(key.ValueExists(name_empty.c_str()));
+  EXPECT_FALSE(key.HasValue(name_str.c_str()));
+  EXPECT_FALSE(key.HasValue(name_dword.c_str()));
+  EXPECT_FALSE(key.HasValue(name_empty.c_str()));
 
   work_item1->Rollback();
   work_item2->Rollback();
   work_item3->Rollback();
 
   std::wstring read_str;
   DWORD read_dword;
   EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(name_str.c_str(), &read_str));
   EXPECT_EQ(ERROR_SUCCESS, key.ReadValueDW(name_dword.c_str(), &read_dword));
   EXPECT_EQ(read_str, data_str);
@@ skipping 10 matching lines @@
 
 // Try deleting a value that doesn't exist.
 TEST_F(DeleteRegValueWorkItemTest, DeleteNonExistentValue) {
   RegKey key;
   std::wstring parent_key(test_root);
   file_util::AppendToPath(&parent_key, L"WriteNew");
   ASSERT_EQ(ERROR_SUCCESS,
       key.Create(HKEY_CURRENT_USER, parent_key.c_str(), KEY_READ | KEY_WRITE));
   std::wstring name_str(L"name_str");
   std::wstring name_dword(L"name_dword");
-  EXPECT_FALSE(key.ValueExists(name_str.c_str()));
-  EXPECT_FALSE(key.ValueExists(name_dword.c_str()));
+  EXPECT_FALSE(key.HasValue(name_str.c_str()));
+  EXPECT_FALSE(key.HasValue(name_dword.c_str()));
 
   scoped_ptr<DeleteRegValueWorkItem> work_item1(
       WorkItem::CreateDeleteRegValueWorkItem(HKEY_CURRENT_USER, parent_key,
                                              name_str));
   scoped_ptr<DeleteRegValueWorkItem> work_item2(
       WorkItem::CreateDeleteRegValueWorkItem(HKEY_CURRENT_USER, parent_key,
                                              name_dword));
 
   EXPECT_TRUE(work_item1->Do());
   EXPECT_TRUE(work_item2->Do());
 
-  EXPECT_FALSE(key.ValueExists(name_str.c_str()));
-  EXPECT_FALSE(key.ValueExists(name_dword.c_str()));
+  EXPECT_FALSE(key.HasValue(name_str.c_str()));
+  EXPECT_FALSE(key.HasValue(name_dword.c_str()));
 
   work_item1->Rollback();
   work_item2->Rollback();
 
-  EXPECT_FALSE(key.ValueExists(name_str.c_str()));
-  EXPECT_FALSE(key.ValueExists(name_dword.c_str()));
+  EXPECT_FALSE(key.HasValue(name_str.c_str()));
+  EXPECT_FALSE(key.HasValue(name_dword.c_str()));
 }