proof of concept for building with libc++

ipc/ipc_message_utils.cc

Index: ipc/ipc_message_utils.cc
diff --git a/ipc/ipc_message_utils.cc b/ipc/ipc_message_utils.cc
index 4cc84949d4f3a147e1770db029c19db608d44fa3..32836d9dfada99905f3ca2146c4374703e0cdcb8 100644
--- a/ipc/ipc_message_utils.cc
+++ b/ipc/ipc_message_utils.cc
@@ -431,7 +431,7 @@ void ParamTraits<std::vector<unsigned char> >::Log(const param_type& p,
 void ParamTraits<std::vector<bool> >::Write(Message* m, const param_type& p) {
   WriteParam(m, static_cast<int>(p.size()));
   for (size_t i = 0; i < p.size(); i++)
-    WriteParam(m, p[i]);
+    WriteParam(m, (bool)p[i]);
 }
 
 bool ParamTraits<std::vector<bool> >::Read(const Message* m,
@@ -455,7 +455,7 @@ void ParamTraits<std::vector<bool> >::Log(const param_type& p, std::string* l) {
   for (size_t i = 0; i < p.size(); ++i) {
     if (i != 0)
       l->push_back(' ');
-    LogParam((p[i]), l);
+    LogParam(((bool)p[i]), l);
   }
 }