Remove dependency on Vector from platform files

src/utils.cc

Index: src/utils.cc
diff --git a/src/utils.cc b/src/utils.cc
index b9964dbb51a886b3047cb13b2b76d36354b21f6b..15768479b8d1bb46d9989f207045e63c02ea746a 100644
--- a/src/utils.cc
+++ b/src/utils.cc
@@ -102,6 +102,25 @@ void PrintPID(const char* format, ...) {
 }
 
 
+int SNPrintF(Vector<char> str, const char* format, ...) {
+  va_list args;
+  va_start(args, format);
+  int result = VSNPrintF(str, format, args);
+  va_end(args);
+  return result;
+}
+
+
+int VSNPrintF(Vector<char> str, const char* format, va_list args) {
+  return OS::VSNPrintF(str.start(), str.length(), format, args);
+}
+
+
+void StrNCpy(Vector<char> dest, const char* src, size_t n) {
+  OS::StrNCpy(dest.start(), dest.length(), src, n);
+}
+
+
 void Flush(FILE* out) {
   fflush(out);
 }