[mojo-edk] Expose notification source to MojoWatch callbacks

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 127 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();
   }
 
+  // See Binding for comments.
+  void SetAllowSyncDispatch(bool allowed);
+
  private:
   friend class base::RefCountedDeleteOnMessageLoop<MultiplexRouter>;
   friend class base::DeleteHelper<MultiplexRouter>;
 
   class InterfaceEndpoint;
   struct Task;
 
   ~MultiplexRouter() override;
 
   // MessageReceiver implementation:
@@ skipping 54 matching lines @@
 
   bool testing_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(MultiplexRouter);
 };
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_MULTIPLEX_ROUTER_H_