remove websocket server dependency from the mojo spy

mojo/spy/spy.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_SPY_SPY_H_
 #define MOJO_SPY_SPY_H_
 
 #include <string>
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "mojo/public/cpp/system/message_pipe.h"
+#include "mojo/spy/common.h"
+#include "url/gurl.h"
 
 namespace base {
+class Time;
 class Thread;
 }
 
 namespace mojo {
 
 class ApplicationManager;
 class SpyServerImpl;
+struct SpyOptions;
 
 // mojo::Spy is a troubleshooting and debugging aid. It helps tracking
 // the mojo system core activities like messages, service creation, etc.
 //
 // The |options| parameter in the constructor comes from the command
 // line of the mojo_shell. Which takes --spy=<options>. Each option is
 // separated by ',' and each option is a key+ value pair separated by ':'.
 //
 // For example --spy=port:13333
 //
 class Spy {
  public:
+  // Interface for the shell-provided websocket server.
+  class WebSocketDelegate {
+   public:
+    virtual void Start(int port, mojo::ScopedMessagePipeHandle server_pipe) = 0;
+    virtual void OnMessage(mojo::MojoMessageData* data,
+                           const GURL& url,
+                           const base::Time& time) = 0;
+  };
+
   Spy(mojo::ApplicationManager* application_manager,
       const std::string& options);
   ~Spy();
 
+  // non-owning reference to the websocket server.
+  void SetWebSocketDelegate(WebSocketDelegate* websocket_delegate);
+
  private:
   scoped_refptr<SpyServerImpl> spy_server_;
   // This thread runs the code that talks to the frontend.
   scoped_ptr<base::Thread> control_thread_;
+  // The delegate is in charge of talking to the html frontend.
+  WebSocketDelegate* websocket_delegate_;
+  ApplicationManager* application_manager_;
+  SpyOptions* spy_options_;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SPY_SPY_H_