[mojo] Add pickling support for native-only structs

mojo/public/cpp/bindings/lib/validation_util.cc

Index: mojo/public/cpp/bindings/lib/validation_util.cc
diff --git a/mojo/public/cpp/bindings/lib/validation_util.cc b/mojo/public/cpp/bindings/lib/validation_util.cc
index 3051c1c2368eb9d3a213dec457823c725e6dd00b..adfba70b57ec36ec0c961b95278cf113a6ec4915 100644
--- a/mojo/public/cpp/bindings/lib/validation_util.cc
+++ b/mojo/public/cpp/bindings/lib/validation_util.cc
@@ -134,5 +134,14 @@ bool ValidateAssociatedInterfaceId(InterfaceId input) {
   return false;
 }
 
+bool ValidateNative(const NativePointer& input, BoundsChecker* bounds_checker) {
+  if (!ValidateEncodedPointer(&input.offset)) {
+    ReportValidationError(VALIDATION_ERROR_ILLEGAL_POINTER);
+    return false;
+  }
+
+  return true;

[yzshen1, 2015/12/15 21:20:27]

I think here we need to use the Validate() of Array_Data<uint_8> to check that
it is a valid array. It claims the memory range from |bounds_checker|, making
sure that it doesn't overlap with other objects in the message, etc.

[Ken Rockot(use gerrit already), 2015/12/15 23:31:07]

Done.

+}
+
 }  // namespace internal
 }  // namespace mojo