Introduce Pickle::{Read,Write}PODArray to serialize arrays of POD

base/pickle.cc

Index: base/pickle.cc
diff --git a/base/pickle.cc b/base/pickle.cc
index c88503ced08ea79df6c81b8304607cc042391f87..78146d663b6eff20f43973446a98ccc6419a7163 100644
--- a/base/pickle.cc
+++ b/base/pickle.cc
@@ -305,6 +305,8 @@ template <size_t length> void Pickle::WriteBytesStatic(const void* data) {
 template void Pickle::WriteBytesStatic<2>(const void* data);
 template void Pickle::WriteBytesStatic<4>(const void* data);
 template void Pickle::WriteBytesStatic<8>(const void* data);
+template void Pickle::WriteBytesStatic<16>(const void* data);
+template void Pickle::WriteBytesStatic<64>(const void* data);
 
 inline void Pickle::WriteBytesCommon(const void* data, size_t length) {
   DCHECK_NE(kCapacityReadOnly, capacity_after_header_)