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

content/public/common/common_param_traits.h

Index: content/public/common/common_param_traits.h
diff --git a/content/public/common/common_param_traits.h b/content/public/common/common_param_traits.h
index 4e7610cdc04b79679ffb871127a2793333288bd2..86659951f7520817ef36bb26c3cd7f077012c93f 100644
--- a/content/public/common/common_param_traits.h
+++ b/content/public/common/common_param_traits.h
@@ -47,6 +47,7 @@ namespace IPC {
 template <>
 struct CONTENT_EXPORT ParamTraits<url::Origin> {
   typedef url::Origin param_type;
+  static void GetSize(base::PickleSizer* s, const param_type& p);
   static void Write(base::Pickle* m, const param_type& p);
   static bool Read(const base::Pickle* m,
                    base::PickleIterator* iter,
@@ -57,6 +58,7 @@ struct CONTENT_EXPORT ParamTraits<url::Origin> {
 template<>
 struct CONTENT_EXPORT ParamTraits<net::HostPortPair> {
   typedef net::HostPortPair param_type;
+  static void GetSize(base::PickleSizer* s, const param_type& p);
   static void Write(base::Pickle* m, const param_type& p);
   static bool Read(const base::Pickle* m,
                    base::PickleIterator* iter,
@@ -67,6 +69,7 @@ struct CONTENT_EXPORT ParamTraits<net::HostPortPair> {
 template <>
 struct CONTENT_EXPORT ParamTraits<net::IPEndPoint> {
   typedef net::IPEndPoint param_type;
+  static void GetSize(base::PickleSizer* s, const param_type& p);
   static void Write(base::Pickle* m, const param_type& p);
   static bool Read(const base::Pickle* m,
                    base::PickleIterator* iter,
@@ -77,6 +80,7 @@ struct CONTENT_EXPORT ParamTraits<net::IPEndPoint> {
 template <>
 struct CONTENT_EXPORT ParamTraits<net::IPAddress> {
   typedef net::IPAddress param_type;
+  static void GetSize(base::PickleSizer* s, const param_type& p);
   static void Write(base::Pickle* m, const param_type& p);
   static bool Read(const base::Pickle* m,
                    base::PickleIterator* iter,
@@ -87,6 +91,7 @@ struct CONTENT_EXPORT ParamTraits<net::IPAddress> {
 template <>
 struct CONTENT_EXPORT ParamTraits<content::PageState> {
   typedef content::PageState param_type;
+  static void GetSize(base::PickleSizer* s, const param_type& p);
   static void Write(base::Pickle* m, const param_type& p);
   static bool Read(const base::Pickle* m,
                    base::PickleIterator* iter,