Change FilterChain::Append() to a template method.

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 52151a9a9433ed2d8d5c3d9ee032bf63527e7736..5caed2f123d99d39843600aacf7899b60a83baca 100644
--- a/mojo/public/cpp/bindings/lib/interface_ptr_internal.h
+++ b/mojo/public/cpp/bindings/lib/interface_ptr_internal.h
@@ -42,9 +42,9 @@ class InterfacePtrState {
     assert(!router_);
 
     FilterChain filters;
-    filters.Append(new MessageHeaderValidator)
-           .Append(new typename Interface::Client::RequestValidator_)
-           .Append(new typename Interface::ResponseValidator_);
+    filters.Append<MessageHeaderValidator>();
+    filters.Append<typename Interface::Client::RequestValidator_>();
+    filters.Append<typename Interface::ResponseValidator_>();
 
     router_ = new Router(handle.Pass(), filters.Pass(), waiter);
     ProxyWithStub* proxy = new ProxyWithStub(router_);