Generate param traits size methods for IPC files in content/ (and traits it depends on).

ipc/mach_port_mac.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ipc/mach_port_mac.h"
 
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_number_conversions.h"
 #include "ipc/mach_port_attachment_mac.h"
 
 namespace IPC {
 
 // static
+void ParamTraits<MachPortMac>::GetSize(base::PickleSizer* s,
+                                       const param_type& p) {
+  s->AddAttachment();
+}
+
+// static
 void ParamTraits<MachPortMac>::Write(base::Pickle* m, const param_type& p) {
   if (!m->WriteAttachment(
           new IPC::internal::MachPortAttachmentMac(p.get_mach_port()))) {
     NOTREACHED();
   }
 }
 
 // static
 bool ParamTraits<MachPortMac>::Read(const base::Pickle* m,
                                     base::PickleIterator* iter,
@@ skipping 17 matching lines @@
   mach_port_attachment->reset_mach_port_ownership();
   return true;
 }
 
 // static
 void ParamTraits<MachPortMac>::Log(const param_type& p, std::string* l) {
   l->append(base::StringPrintf("mach port: 0x%X", p.get_mach_port()));
 }
 
 }  // namespace IPC