Make it possible to have multiple InspectorBackends

sky/services/inspector/inspector_frontend_impl.h

Index: sky/services/inspector/inspector_frontend_impl.h
diff --git a/sky/services/inspector/inspector_frontend_impl.h b/sky/services/inspector/inspector_frontend_impl.h
index 6521760351bcdf3178de391a1ceb3b18037ceb63..f16ae87cc71f02a1975e45bb20368db8cacefd81 100644
--- a/sky/services/inspector/inspector_frontend_impl.h
+++ b/sky/services/inspector/inspector_frontend_impl.h
@@ -14,42 +14,30 @@
 namespace sky {
 namespace inspector {
 
-class InspectorFrontendImpl : public mojo::InterfaceImpl<InspectorFrontend>,
-                             public net::HttpServer::Delegate {
+class InspectorFrontendImpl : public mojo::InterfaceImpl<InspectorFrontend> {
  public:
-  InspectorFrontendImpl();
+  class Delegate {
+  public:
+    virtual void Register(InspectorFrontendImpl*) = 0;
+    virtual void Unregister(InspectorFrontendImpl*) = 0;
+
+    virtual void Listen(int32_t port) = 0;
+    virtual void SendMessage(const mojo::String&) = 0;
+  };
+
+  InspectorFrontendImpl(Delegate* delegate);
   virtual ~InspectorFrontendImpl();
 
  private:
-  // From net::HttpServer::Delegate
-  virtual void OnConnect(int connection_id) override;
-  virtual void OnHttpRequest(
-      int connection_id, const net::HttpServerRequestInfo& info) override;
-  virtual void OnWebSocketRequest(
-      int connection_id, const net::HttpServerRequestInfo& info) override;
-  virtual void OnWebSocketMessage(
-      int connection_id, const std::string& data) override;
-  virtual void OnClose(int connection_id) override;
-
   // From InspectorFrontend
-  virtual void Listen(int32_t port) override;
-  virtual void SendMessage(const mojo::String&) override;
+  void Listen(int32_t port) override;
+  void SendMessage(const mojo::String& message) override;
 
-  void StopListening();
-
-  void Register(int port);
-  void Unregister();
-
-  int port_;
-  int connection_id_;
-  scoped_ptr<net::HttpServer> web_server_;
+  Delegate* delegate_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(InspectorFrontendImpl);
 };
 
-typedef mojo::InterfaceFactoryImpl<
-    InspectorFrontendImpl> InspectorFrontendFactory;
-
 }  // namespace tester
 }  // namespace sky