Add a user id parameter to connections

mojo/shell/application_instance.h

 // Copyright 2015 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_APPLICATION_INSTANCE_H_
 #define MOJO_SHELL_APPLICATION_INSTANCE_H_
 
 #include <stdint.h>
 
 #include <set>
@@ skipping 39 matching lines @@
 
   mojom::ShellClient* shell_client() { return shell_client_.get(); }
   const Identity& identity() const { return identity_; }
   uint32_t id() const { return id_; }
   base::ProcessId pid() const { return pid_; }
   void set_pid(base::ProcessId pid) { pid_ = pid; }
 
  private:
   // Shell implementation:
   void Connect(const String& app_url,
+               uint32_t user_id,
                shell::mojom::InterfaceProviderRequest remote_interfaces,
                shell::mojom::InterfaceProviderPtr local_interfaces,
                mojom::CapabilityFilterPtr filter,
                const ConnectCallback& callback) override;
   void QuitApplication() override;
 
   // PIDReceiver implementation:
   void SetPID(uint32_t pid) override;
 
   uint32_t GenerateUniqueID() const;
@@ skipping 21 matching lines @@
   NativeRunner* native_runner_;
   base::ProcessId pid_;
 
   DISALLOW_COPY_AND_ASSIGN(ApplicationInstance);
 };
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_APPLICATION_INSTANCE_H_