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

extensions/common/extension_messages.h

Index: extensions/common/extension_messages.h
diff --git a/extensions/common/extension_messages.h b/extensions/common/extension_messages.h
index 8b3bce3d72a2981e036bb96b699fed2264593fce..bd48626c3e630750bfbfbfd7e36ae4a7d565e330 100644
--- a/extensions/common/extension_messages.h
+++ b/extensions/common/extension_messages.h
@@ -306,6 +306,7 @@ namespace IPC {
 template <>
 struct ParamTraits<URLPattern> {
   typedef URLPattern 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,
@@ -316,6 +317,7 @@ struct ParamTraits<URLPattern> {
 template <>
 struct ParamTraits<extensions::URLPatternSet> {
   typedef extensions::URLPatternSet 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,
@@ -326,6 +328,7 @@ struct ParamTraits<extensions::URLPatternSet> {
 template <>
 struct ParamTraits<extensions::APIPermission::ID> {
   typedef extensions::APIPermission::ID 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,
@@ -336,6 +339,7 @@ struct ParamTraits<extensions::APIPermission::ID> {
 template <>
 struct ParamTraits<extensions::APIPermissionSet> {
   typedef extensions::APIPermissionSet 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,
@@ -346,6 +350,7 @@ struct ParamTraits<extensions::APIPermissionSet> {
 template <>
 struct ParamTraits<extensions::ManifestPermissionSet> {
   typedef extensions::ManifestPermissionSet 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,
@@ -356,6 +361,7 @@ struct ParamTraits<extensions::ManifestPermissionSet> {
 template <>
 struct ParamTraits<HostID> {
   typedef HostID 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,
@@ -366,6 +372,7 @@ struct ParamTraits<HostID> {
 template <>
 struct ParamTraits<ExtensionMsg_PermissionSetStruct> {
   typedef ExtensionMsg_PermissionSetStruct 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,