Move StringToLowerASCII to base namespace

chrome/app/signature_validator_win_unittest.cc

 // Copyright 2013 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 <atlstr.h>
 #include <wincrypt.h>
 #include <windows.h>
 #include <wintrust.h>
 
 #include "base/base_paths.h"
@@ skipping 67 matching lines @@
     size_t public_key_length = blob.cbData;
     uint8* public_key = blob.pbData;
 
     uint8 hash[crypto::kSHA256Length] = {0};
 
     base::StringPiece key_bytes(reinterpret_cast<char*>(public_key),
                                 public_key_length);
     crypto::SHA256HashString(key_bytes, hash, crypto::kSHA256Length);
 
     std::string public_key_hash =
-        StringToLowerASCII(base::HexEncode(hash, arraysize(hash)));
+        base::StringToLowerASCII(base::HexEncode(hash, arraysize(hash)));
     expected_hashes_.push_back(public_key_hash);
   }
 
   void RunTest(const wchar_t* dll_filename, bool isValid, bool isGoogle) {
     base::FilePath full_dll_path = GetTestDLLsDirectory().Append(dll_filename);
     ASSERT_EQ(isValid, VerifyAuthenticodeSignature(full_dll_path));
     ASSERT_EQ(isGoogle, VerifySignerIsGoogle(full_dll_path, kGoogleCertIssuer,
                                              expected_hashes_));
   }
 
@@ skipping 23 matching lines @@
 TEST_F(SignatureValidatorTest, CertPinningTest) {
   RunTest(L"different_hash.dll", true, false);
 }
 
 TEST_F(SignatureValidatorTest, ExpiredCertTest) {
   //TODO(caitkp): Figure out how to sign a dll with an expired cert.
   RunTest(L"expired.dll", false, false);
 }