Add utf_string_conversions to base namespace.

chrome/browser/accessibility/accessibility_win_browsertest.cc

 // Copyright (c) 2012 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 <atlbase.h>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
@@ skipping 158 matching lines @@
   node->get_accName(CreateI4Variant(CHILDID_SELF), &name_bstr);
   wstring name(name_bstr.m_str, SysStringLen(name_bstr));
   VARIANT role = {0};
   node->get_accRole(CreateI4Variant(CHILDID_SELF), &role);
 
   // Print the accessibility tree as we go, because if this test fails
   // on the bots, this is really helpful in figuring out why.
   for (int i = 0; i < depth; i++) {
     printf("  ");
   }
-  printf("role=%d name=%s\n", role.lVal, WideToUTF8(name).c_str());
+  printf("role=%d name=%s\n", role.lVal, base::WideToUTF8(name).c_str());
 
   if (expected_role == role.lVal && expected_name == name) {
     *found = true;
     return;
   }
 
   LONG child_count = 0;
   HRESULT hr = node->get_accChildCount(&child_count);
   ASSERT_EQ(S_OK, hr);
 
@@ skipping 644 matching lines @@
 
   // Check the browser's copy of the renderer accessibility tree.
   AccessibleChecker grouping1_checker(L"", ROLE_SYSTEM_GROUPING, L"");
   AccessibleChecker grouping2_checker(L"", ROLE_SYSTEM_GROUPING, L"");
   AccessibleChecker document_checker(L"", ROLE_SYSTEM_DOCUMENT, L"");
   document_checker.AppendExpectedChild(&grouping1_checker);
   document_checker.AppendExpectedChild(&grouping2_checker);
   document_checker.CheckAccessible(GetRendererAccessible());
 }
 }  // namespace.