Mojo C++ bindings: remove the single-threaded Router.

mojo/public/cpp/bindings/binding.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_BINDING_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_BINDING_H_
 
 #include <string>
 #include <utility>
 
@@ skipping 257 matching lines @@
   // Sends a no-op message on the underlying message pipe and runs the current
   // message loop until its response is received. This can be used in tests to
   // verify that no message was sent on a message pipe in response to some
   // stimulus.
   void FlushForTesting() { internal_state_.FlushForTesting(); }
 
   // Exposed for testing, should not generally be used.
   void EnableTestingMode() { internal_state_.EnableTestingMode(); }
 
  private:
-  internal::BindingState<Interface, true, ImplRefTraits> internal_state_;
+  internal::BindingState<Interface, ImplRefTraits> internal_state_;
 
   DISALLOW_COPY_AND_ASSIGN(Binding);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_BINDING_H_