Change userid from a uint32_t to a string guid

content/common/mojo/mojo_shell_connection_impl.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 CONTENT_COMMON_MOJO_SHELL_CONNECTION_IMPL_H_
 #define CONTENT_COMMON_MOJO_SHELL_CONNECTION_IMPL_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 39 matching lines @@
   // Same as BindToCommandLinePlatformChannel(), but receives a |handle| instead
   // of looking for one on the command line.
   void BindToMessagePipe(mojo::ScopedMessagePipeHandle handle);
 
  private:
   explicit MojoShellConnectionImpl(bool external);
   ~MojoShellConnectionImpl() override;
 
   // mojo::ShellClient:
   void Initialize(mojo::Connector* connector, const std::string& url,
-                  uint32_t id, uint32_t user_id) override;
+                  const std::string& user_id, uint32_t id) override;
   bool AcceptConnection(mojo::Connection* connection) override;
 
   // MojoShellConnection:
   mojo::Connector* GetConnector() override;
   bool UsingExternalShell() const override;
   void AddListener(Listener* listener) override;
   void RemoveListener(Listener* listener) override;
 
   // Blocks the calling thread until a connection to the spawning shell is
   // established, an Application request from it is bound, and the Initialize()
   // method on that application is called.
   void WaitForShell(mojo::ScopedMessagePipeHandle handle);
 
   bool external_;
   bool initialized_;
   scoped_ptr<mojo::shell::RunnerConnection> runner_connection_;
   scoped_ptr<mojo::ShellConnection> shell_connection_;
   std::vector<Listener*> listeners_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoShellConnectionImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_MOJO_SHELL_CONNECTION_IMPL_H_