Fix the build after commit 8cadf995e9a0.

fpdfsdk/src/fpdfformfill_embeddertest.cpp

 // Copyright 2015 PDFium 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 "../../public/fpdf_formfill.h"
 #include "../../testing/embedder_test.h"
 #include "../../testing/embedder_test_mock_delegate.h"
 #include "../../testing/embedder_test_timer_handling_delegate.h"
-#include "../../testing/test_support.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::_;
 using testing::Return;
 
 class FPDFFormFillEmbeddertest : public EmbedderTest {};
 
 TEST_F(FPDFFormFillEmbeddertest, FirstTest) {
   EmbedderTestMockDelegate mock;
@@ skipping 52 matching lines @@
   EXPECT_TRUE(OpenDocument("testing/resources/bug_551248.pdf"));
   FPDF_PAGE page = LoadPage(0);
   EXPECT_NE(nullptr, page);
   DoOpenActions();
   delegate.AdvanceTime(5000);
   UnloadPage(page);
 
   const auto& alerts = delegate.GetAlerts();
   ASSERT_EQ(1U, alerts.size());
 
-  std::wstring message = GetWideString(alerts[0].message);
-  std::wstring title = GetWideString(alerts[0].title);
-  EXPECT_STREQ(L"hello world", message.c_str());
-  EXPECT_STREQ(L"Alert", title.c_str());
+  EXPECT_STREQ(L"hello world", alerts[0].message.c_str());
+  EXPECT_STREQ(L"Alert", alerts[0].title.c_str());
   EXPECT_EQ(0, alerts[0].type);
   EXPECT_EQ(0, alerts[0].icon);
 }