Stub in more IPC attachment brokering functionality.

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 f86022c691a09cded39dc2cd21928bcaca8b9646..dfed3eb28187bd8dbee4361b866289d7c5d695be 100644
--- a/ipc/ipc_message_utils.cc
+++ b/ipc/ipc_message_utils.cc
@@ -445,6 +445,35 @@ void ParamTraits<std::vector<bool> >::Log(const param_type& p, std::string* l) {
   }
 }
 
+void ParamTraits<IPC::BrokerableAttachment::AttachmentId>::Write(
+    Message* m,
+    const param_type& p) {
+  for (int i = 0; i < 4; ++i) {
+    m->WriteUInt32(p.nonce[i]);
+  }
+}
+
+bool ParamTraits<IPC::BrokerableAttachment::AttachmentId>::Read(
+    const Message* m,
+    base::PickleIterator* iter,
+    param_type* r) {
+  for (int i = 0; i < 4; ++i) {
+    uint32_t temp;
+    if (!iter->ReadUInt32(&temp))
+      return false;
+    r->nonce[i] = temp;
+  }
+  return true;
+}
+
+void ParamTraits<IPC::BrokerableAttachment::AttachmentId>::Log(
+    const param_type& p,
+    std::string* l) {
+  for (int i = 0; i < 4; ++i) {
+    l->append(base::UintToString(p.nonce[i]));
+  }
+}
+
 void ParamTraits<base::DictionaryValue>::Write(Message* m,
                                                const param_type& p) {
   WriteValue(m, &p, 0);