Make JS app.setTimeOut() work again.

samples/pdfium_test.cc

Index: samples/pdfium_test.cc
diff --git a/samples/pdfium_test.cc b/samples/pdfium_test.cc
index 571bfcd3e697a18e77a8e59b275ca75a68dd7aba..102f59d9178c6ef42a479f8184bb1f7e16932c9e 100644
--- a/samples/pdfium_test.cc
+++ b/samples/pdfium_test.cc
@@ -196,19 +196,8 @@ void WriteEmf(FPDF_PAGE page, const char* pdf_name, int num) {
 
 int ExampleAppAlert(IPDF_JSPLATFORM*, FPDF_WIDESTRING msg, FPDF_WIDESTRING,
                     int, int) {
-  // Deal with differences between UTF16LE and wchar_t on this platform.
-  size_t characters = 0;
-  while (msg[characters]) {
-    ++characters;
-  }
-  wchar_t* platform_string =
-      static_cast<wchar_t*>(malloc((characters + 1) * sizeof(wchar_t)));
-  for (size_t i = 0; i < characters + 1; ++i) {
-    unsigned char* ptr = (unsigned char*)&msg[i];
-    platform_string[i] = ptr[0] + 256 * ptr[1];
-  }
-  printf("Alert: %ls\n", platform_string);
-  free(platform_string);
+  std::wstring platform_string = GetWideString(msg);
+  printf("Alert: %ls\n", platform_string.c_str());
   return 0;
 }