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

components/autofill/content/common/autofill_message_generator.cc

Index: components/autofill/content/common/autofill_message_generator.cc
diff --git a/components/autofill/content/common/autofill_message_generator.cc b/components/autofill/content/common/autofill_message_generator.cc
index 0529172dedef7fa9d3260c465fae9e0b89684bc9..4bc61d1689f343625f46eddc8f5e339a18c9dfc8 100644
--- a/components/autofill/content/common/autofill_message_generator.cc
+++ b/components/autofill/content/common/autofill_message_generator.cc
@@ -14,6 +14,14 @@
 #include "ipc/struct_destructor_macros.h"
 #include "components/autofill/content/common/autofill_message_generator.h"
 
+// Generate param traits size methods.
+#include "ipc/param_traits_size_macros.h"
+namespace IPC {
+#undef COMPONENTS_AUTOFILL_CONTENT_COMMON_AUTOFILL_PARAM_TRAITS_MACROS_H_
+#include "components/autofill/content/common/autofill_message_generator.h"
+#include "components/autofill/content/common/autofill_param_traits_macros.h"
+}  // namespace IPC
+
 // Generate param traits write methods.
 #include "ipc/param_traits_write_macros.h"
 namespace IPC {