Add a user id parameter to connections

mojo/shell/public/cpp/shell.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 MOJO_SHELL_PUBLIC_CPP_SHELL_H_
 #define MOJO_SHELL_PUBLIC_CPP_SHELL_H_
 
 #include "mojo/shell/public/cpp/connection.h"
 #include "mojo/shell/public/interfaces/shell.mojom.h"
 #include "mojo/shell/public/interfaces/shell_client.mojom.h"
@@ skipping 29 matching lines @@
     explicit ConnectParams(const std::string& url);
     ~ConnectParams();
 
     const GURL& url() { return url_; }
     shell::mojom::CapabilityFilterPtr TakeFilter() {
       return std::move(filter_);
     }
     void set_filter(shell::mojom::CapabilityFilterPtr filter) {
       filter_ = std::move(filter);
     }
+    void set_user_id(uint32_t user_id) { user_id_ = user_id; }
+    uint32_t user_id() const { return user_id_; }
 
    private:
     GURL url_;
     shell::mojom::CapabilityFilterPtr filter_;
+    uint32_t user_id_;
 
     DISALLOW_COPY_AND_ASSIGN(ConnectParams);
   };
 
   // Requests a new connection to an application. Returns a pointer to the
   // connection if the connection is permitted by this application's delegate,
   // or nullptr otherwise. Caller takes ownership.
   virtual scoped_ptr<Connection> Connect(const std::string& url) = 0;
   virtual scoped_ptr<Connection> Connect(ConnectParams* params) = 0;
 
@@ skipping 19 matching lines @@
 
   // Create an object that can be used to refcount the lifetime of the
   // application. The returned object may be cloned, and when the refcount falls
   // to zero Quit() is called.
   virtual scoped_ptr<AppRefCount> CreateAppRefCount() = 0;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_PUBLIC_CPP_SHELL_H_