Fix the build after commit 8cadf995e9a0.

testing/embedder_test_timer_handling_delegate.h

 // 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.
 
 #ifndef TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_
 #define TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_
 
 #include <map>
+#include <string>
 #include <utility>
 #include <vector>
 
 #include "embedder_test.h"
+#include "test_support.h"
 
 class EmbedderTestTimerHandlingDelegate : public EmbedderTest::Delegate {
  public:
   struct ReceivedAlert {
     ReceivedAlert(FPDF_WIDESTRING message_in,
                   FPDF_WIDESTRING title_in,
                   int type_in,
                   int icon_in)
-        : message(message_in), title(title_in), type(type_in), icon(icon_in) {}
+        : type(type_in), icon(icon_in) {
+      message = GetWideString(message_in);
+      title = GetWideString(title_in);
+    }
 
-    FPDF_WIDESTRING message;
-    FPDF_WIDESTRING title;
+    std::wstring message;
+    std::wstring title;
     int type;
     int icon;
   };
 
   int Alert(FPDF_WIDESTRING message,
             FPDF_WIDESTRING title,
             int type,
             int icon) override {
     alerts_.push_back(ReceivedAlert(message, title, type, icon));
     return 0;
@@ skipping 35 matching lines @@
 
  protected:
   using Timer = std::pair<int, TimerCallback>;     // ID, callback pair.
   std::multimap<int, Timer> expiry_to_timer_map_;  // Keyed by timeout.
   int next_timer_id_ = 0;
   int imaginary_elapsed_msecs_ = 0;
   std::vector<ReceivedAlert> alerts_;
 };
 
 #endif  // TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_