Fix include import in ios/web

ios/web/web_state/js/credential_util_unittest.mm

 // Copyright 2015 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 "ios/web/public/web_state/js/credential_util.h"
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "ios/web/public/web_state/credential.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "testing/gtest_mac.h"
+#import "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 #include "url/gurl.h"
 #include "url/origin.h"
 
 namespace web {
 namespace {
 
 // "type" value for a DictionaryValue representation of PasswordCredential.
 const char* kTestCredentialTypePassword = "PasswordCredential";
 
@@ skipping 197 matching lines @@
 TEST(CredentialUtilTest, SerializeEmptyCredentialIntoNonEmptyDictionary) {
   base::DictionaryValue value;
   value.SetString("foo", "bar");
   Credential credential;
   CredentialToDictionaryValue(credential, &value);
   EXPECT_TRUE(base::WrapUnique(new base::DictionaryValue)->Equals(&value));
 }
 
 }  // namespace
 }  // namespace web