Mojo C++ bindings: add more perf tests for Router/MultiplexRouter.

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

 // Copyright 2015 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_MULTIPLEX_ROUTER_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_MULTIPLEX_ROUTER_H_
 
 #include <stdint.h>
 
 #include <deque>
@@ skipping 111 matching lines @@
     DCHECK(thread_checker_.CalledOnValidThread());
     return connector_.is_valid();
   }
 
   // TODO(yzshen): consider removing this getter.
   MessagePipeHandle handle() const {
     DCHECK(thread_checker_.CalledOnValidThread());
     return connector_.handle();
   }
 
+  bool SimulateReceivingMessageForTesting(Message* message) {
+    return filters_.Accept(message);
+  }
+
  private:
   class InterfaceEndpoint;
   struct Task;
 
   ~MultiplexRouter() override;
 
   // MessageReceiver implementation:
   bool Accept(Message* message) override;
 
   // PipeControlMessageHandlerDelegate implementation:
@@ skipping 94 matching lines @@
 
   bool testing_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(MultiplexRouter);
 };
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_MULTIPLEX_ROUTER_H_