Fixed all unused-variable Clang warnings on Windows.

components/autofill/core/browser/autofill_ie_toolbar_import_win_unittest.cc

Index: components/autofill/core/browser/autofill_ie_toolbar_import_win_unittest.cc
diff --git a/components/autofill/core/browser/autofill_ie_toolbar_import_win_unittest.cc b/components/autofill/core/browser/autofill_ie_toolbar_import_win_unittest.cc
index 5eb9c821bfa1b22a763ad0f95213825cc3265918..abac32d113a4cc0f785c894f9c5120f1d4b3d153 100644
--- a/components/autofill/core/browser/autofill_ie_toolbar_import_win_unittest.cc
+++ b/components/autofill/core/browser/autofill_ie_toolbar_import_win_unittest.cc
@@ -70,19 +70,20 @@ ValueDescription credit_card[] = {
 };
 
 ValueDescription empty_salt = {
-  L"salt", L"\x1\x2\x3\x4\x5\x6\x7\x8\x9\xA\xB\xC\xD\xE\xF\x10\x11\x12\x13\x14"
+  kSaltValue,
+  L"\x1\x2\x3\x4\x5\x6\x7\x8\x9\xA\xB\xC\xD\xE\xF\x10\x11\x12\x13\x14"
 };
 
 ValueDescription empty_password = {
-  L"password_hash", L""
+  kPasswordHashValue, L""
 };
 
 ValueDescription protected_salt = {
-  L"salt", L"\x4854\xB906\x9C7C\x50A6\x4376\xFD9D\x1E02"
+  kSaltValue, L"\x4854\xB906\x9C7C\x50A6\x4376\xFD9D\x1E02"
 };
 
 ValueDescription protected_password = {
-  L"password_hash", L"\x18B7\xE586\x459B\x7457\xA066\x3842\x71DA"
+  kPasswordHashValue, L"\x18B7\xE586\x459B\x7457\xA066\x3842\x71DA"
 };
 
 void EncryptAndWrite(RegKey* key, const ValueDescription* value) {