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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_PTR_INTERNAL_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_PTR_INTERNAL_H_
 
 #include <stdio.h>
 
 #include "mojo/public/cpp/bindings/lib/filter_chain.h"
@@ skipping 24 matching lines @@
     std::swap(other->instance_, instance_);
     std::swap(other->router_, router_);
   }
 
   void ConfigureProxy(ScopedMessagePipeHandle handle,
                       MojoAsyncWaiter* waiter = GetDefaultAsyncWaiter()) {
     assert(!instance_);
     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_);
     router_->set_incoming_receiver(&proxy->stub);
 
     instance_ = proxy;
   }
 
  private:
   class ProxyWithStub : public Interface::Proxy_ {
@@ skipping 12 matching lines @@
   Interface* instance_;
   Router* router_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(InterfacePtrState);
 };
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_PTR_INTERNAL_H_