Make browser process a singleton service

content/public/common/service_manager_connection.h

 // Copyright 2016 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 CONTENT_PUBLIC_COMMON_SERVICE_MANAGER_CONNECTION_H_
 #define CONTENT_PUBLIC_COMMON_SERVICE_MANAGER_CONNECTION_H_
 
 #include <memory>
 
 #include "base/callback_forward.h"
@@ skipping 59 matching lines @@
   // that no incoming connections are accepted until Start() is called.
   static std::unique_ptr<ServiceManagerConnection> Create(
       service_manager::mojom::ServiceRequest request,
       scoped_refptr<base::SequencedTaskRunner> io_task_runner);
 
   // Begins accepting incoming connections. Connection filters MUST be added
   // before calling this in order to avoid races. See AddConnectionFilter()
   // below.
   virtual void Start() = 0;
 
-  // Sets a closure to be invoked once the connection receives an Initialize()
-  // request from the shell.
-  virtual void SetInitializeHandler(const base::Closure& handler) = 0;
-
   // Returns the service_manager::Connector received via this connection's
   // Service
   // implementation. Use this to initiate connections as this object's Identity.
   virtual service_manager::Connector* GetConnector() = 0;
 
   // Returns this connection's identity with the Service Manager. Connections
   // initiated via the service_manager::Connector returned by GetConnector()
   // will use
   // this.
   virtual const service_manager::Identity& GetIdentity() const = 0;
@@ skipping 57 matching lines @@
   // Registers a callback to be run when the service_manager::Service
   // implementation on the IO thread receives OnConnect(). Returns an id that
   // can be passed to RemoveOnConnectHandler(), starting at 1.
   virtual int AddOnConnectHandler(const OnConnectHandler& handler) = 0;
   virtual void RemoveOnConnectHandler(int id) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_SERVICE_MANAGER_CONNECTION_H_