Mojo Bindings: Fix lock-order inversion in associated controllers

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

Index: mojo/public/cpp/bindings/lib/pipe_control_message_proxy.cc
diff --git a/mojo/public/cpp/bindings/lib/pipe_control_message_proxy.cc b/mojo/public/cpp/bindings/lib/pipe_control_message_proxy.cc
index c1508ae3374bf41c02cc10f0a91568aef8e88a1d..e2155e793563ec672014d7a0dfc47eaf3f74ccf3 100644
--- a/mojo/public/cpp/bindings/lib/pipe_control_message_proxy.cc
+++ b/mojo/public/cpp/bindings/lib/pipe_control_message_proxy.cc
@@ -54,7 +54,8 @@ void PipeControlMessageProxy::NotifyPeerEndpointClosed(InterfaceId id) {
       pipe_control::RunOrClosePipeInput::New());
   input->set_peer_associated_endpoint_closed_event(std::move(event));
 
-  SendRunOrClosePipeMessage(receiver_, std::move(input), &context_);
+  internal::SerializationContext context;
+  SendRunOrClosePipeMessage(receiver_, std::move(input), &context);
 }
 
 void PipeControlMessageProxy::NotifyEndpointClosedBeforeSent(InterfaceId id) {
@@ -67,7 +68,8 @@ void PipeControlMessageProxy::NotifyEndpointClosedBeforeSent(InterfaceId id) {
       pipe_control::RunOrClosePipeInput::New());
   input->set_associated_endpoint_closed_before_sent_event(std::move(event));
 
-  SendRunOrClosePipeMessage(receiver_, std::move(input), &context_);
+  internal::SerializationContext context;
+  SendRunOrClosePipeMessage(receiver_, std::move(input), &context);
 }
 
 }  // namespace mojo