win: Implement c16lcpy without base:c16*

util/stdlib/strlcpy.cc

Index: util/stdlib/strlcpy.cc
diff --git a/util/stdlib/strlcpy.cc b/util/stdlib/strlcpy.cc
index 90d6d96ecc71c55ce200e9fb70506ed4944f32ce..be0dfb27c3a9e9ef150865fac359b4df176755cf 100644
--- a/util/stdlib/strlcpy.cc
+++ b/util/stdlib/strlcpy.cc
@@ -14,8 +14,27 @@
 
 #include "util/stdlib/strlcpy.h"
 
+#include "base/logging.h"
+#include "build/build_config.h"
+
+#if defined(OS_WIN) && defined(WCHAR_T_IS_UTF16)
+#include <strsafe.h>
+#endif
+
 namespace crashpad {
 
+#if defined(OS_WIN) && defined(WCHAR_T_IS_UTF16)
+
+size_t c16lcpy(base::char16* destination,
+               const base::char16* source,
+               size_t length) {
+  HRESULT result = StringCchCopyW(destination, length, source);
+  CHECK(result == S_OK || result == STRSAFE_E_INSUFFICIENT_BUFFER);
+  return wcslen(source);
+}
+
+#elif defined(WCHAR_T_IS_UTF32)
+
 size_t c16lcpy(base::char16* destination,
                const base::char16* source,
                size_t length) {
@@ -29,4 +48,6 @@ size_t c16lcpy(base::char16* destination,
   return source_length;
 }
 
+#endif  // WCHAR_T_IS_UTF32
+
 }  // namespace crashpad