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..8c6d469be55020767b124802d028c0e6f793cd56 100644
--- a/util/stdlib/strlcpy.cc
+++ b/util/stdlib/strlcpy.cc
@@ -14,8 +14,25 @@
 
 #include "util/stdlib/strlcpy.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) {
+  StringCchCopyW(destination, length, source);

[Mark Mentovai, 2015/10/23 20:24:32]

CHECK that the return value is either of the two acceptable HRESULTs.

[scottmg, 2015/10/23 20:32:40]

Done.

+  return wcslen(source);
+}
+
+#elif defined(WCHAR_T_IS_UTF32)
+
 size_t c16lcpy(base::char16* destination,
                const base::char16* source,
                size_t length) {
@@ -29,4 +46,6 @@ size_t c16lcpy(base::char16* destination,
   return source_length;
 }
 
+#endif  // WCHAR_T_IS_UTF32
+
 }  // namespace crashpad