Mojo: RemotePtr<S> + bindings changes for Peer attribute.

mojo/public/bindings/generators/cpp_templates/module.cc-template

 // Copyright $YEAR 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.
 
 #include "$HEADER"
 
 #include "mojo/public/bindings/lib/message_builder.h"
 #include "$INTERNAL_HEADER"
 
-namespace sample {
+namespace $NAMESPACE {
 namespace {
 
 #pragma pack(push, 1)
 #if defined(__clang__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wunused-private-field"
 #endif
 $PARAM_DEFINITIONS
 #if defined(__clang__)
 #pragma clang diagnostic pop
 #endif
 #pragma pack(pop)
 
 }  // namespace
 
 $STRUCT_DEFINITIONS
 
 $INTERFACE_DEFINITIONS
-}  // namespace sample
+}  // namespace $NAMESPACE
 
 namespace mojo {
 namespace internal {
 
 $STRUCT_SERIALIZATION_DEFINITIONS
 
 $INTERFACE_SERIALIZATION_DEFINITIONS
 
 }  // namespace internal
 }  // namespace mojo