[OLD ATTEMPT, DO NOT REVIEW] mustash: Enable connections to mus from the Chrome renderer

content/common/mojo/mojo_shell_connection_impl.h

Index: content/common/mojo/mojo_shell_connection_impl.h
diff --git a/content/common/mojo/mojo_shell_connection_impl.h b/content/common/mojo/mojo_shell_connection_impl.h
index 8891acba7bc1e54927325891a6c4f7aa51cffe2d..a3c84dd77c3e378108f07099f376be4d87e3532e 100644
--- a/content/common/mojo/mojo_shell_connection_impl.h
+++ b/content/common/mojo/mojo_shell_connection_impl.h
@@ -37,6 +37,8 @@ class MojoShellConnectionImpl : public MojoShellConnection,
   static void CreateWithMessagePipe(mojo::ScopedMessagePipeHandle handle);
 
  private:
+  friend class MojoShellConnection;
+
   MojoShellConnectionImpl();
   ~MojoShellConnectionImpl() override;
 
@@ -50,6 +52,8 @@ class MojoShellConnectionImpl : public MojoShellConnection,
   void AddListener(Listener* listener) override;
   void RemoveListener(Listener* listener) override;
 
+  void OnDestroy();
+
   // Blocks the calling thread until a connection to the spawning shell is
   // established, an Application request from it is bound, and the Initialize()
   // method on that application is called.