Mojo cpp bindings: add support for validating incoming messages.

mojo/public/cpp/bindings/lib/interface_ptr_internal.h

Index: mojo/public/cpp/bindings/lib/interface_ptr_internal.h
diff --git a/mojo/public/cpp/bindings/lib/interface_ptr_internal.h b/mojo/public/cpp/bindings/lib/interface_ptr_internal.h
index 041a31c8a0c8134058705775019069d19f924f6c..181706fc5dbbd9967155cfc86a2e7557e4f453ae 100644
--- a/mojo/public/cpp/bindings/lib/interface_ptr_internal.h
+++ b/mojo/public/cpp/bindings/lib/interface_ptr_internal.h
@@ -7,7 +7,9 @@
 
 #include <stdio.h>
 
+#include "mojo/public/cpp/bindings/lib/message_header_validator.h"
 #include "mojo/public/cpp/bindings/lib/router.h"
+#include "mojo/public/cpp/bindings/lib/validator_chain.h"
 
 namespace mojo {
 namespace internal {
@@ -47,7 +49,12 @@ class InterfacePtrState {
     assert(!instance_);
     assert(!router_);
 
-    router_ = new Router(handle.Pass(), waiter);
+    internal::ValidatorChain validators;

[darin (slow to review), 2014/05/12 17:28:26]

nit: already in the internal namespace

[yzshen1, 2014/05/12 21:59:58]

Done.

+    validators.Append(new internal::MessageHeaderValidator)
+              .Append(new typename Interface::Client_::RequestValidator_)
+              .Append(new typename Interface::ResponseValidator_);
+
+    router_ = new Router(handle.Pass(), validators.Pass(), waiter);
     ProxyWithStub* proxy = new ProxyWithStub(router_);
     router_->set_incoming_receiver(&proxy->stub);
 
@@ -62,7 +69,12 @@ class InterfacePtrState {
     // Stub for binding to state_.instance
     // Proxy for communicating to the client on the other end of the pipe.
 
-    router_ = new Router(handle.Pass(), waiter);
+    internal::ValidatorChain validators;
+    validators.Append(new internal::MessageHeaderValidator)
+              .Append(new typename Interface::RequestValidator_)
+              .Append(new typename Interface::Client_::ResponseValidator_);
+
+    router_ = new Router(handle.Pass(), validators.Pass(), waiter);
     ClientProxyWithStub* proxy = new ClientProxyWithStub(router_);
     proxy->stub.set_sink(instance_);
     router_->set_incoming_receiver(&proxy->stub);