Change userid from a uint32_t to a string guid

content/browser/mojo/mojo_app_connection_impl.cc

 // 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.
 
 #include "content/browser/mojo/mojo_app_connection_impl.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/bind.h"
 #include "content/browser/mojo/mojo_shell_context.h"
 
 namespace content {
 
 const char kBrowserMojoAppUrl[] = "system:content_browser";
 
 namespace {
-void OnGotInstanceID(uint32_t remote_id, uint32_t user_id) {}
+void OnGotInstanceID(const std::string& user_id, uint32_t remote_id) {}
 }  // namespace
 
 // static
 scoped_ptr<MojoAppConnection> MojoAppConnection::Create(
     const std::string& name,
     const std::string& requestor_name) {
   return scoped_ptr<MojoAppConnection>(
       new MojoAppConnectionImpl(name, requestor_name));
 }
 
 MojoAppConnectionImpl::MojoAppConnectionImpl(
     const std::string& name,
     const std::string& requestor_name) {
   MojoShellContext::ConnectToApplication(
       name, requestor_name, mojo::GetProxy(&interfaces_),
       mojo::shell::mojom::InterfaceProviderPtr(),
       base::Bind(&OnGotInstanceID));
 }
 
 MojoAppConnectionImpl::~MojoAppConnectionImpl() {
 }
 
 void MojoAppConnectionImpl::GetInterface(
     const std::string& interface_name,
     mojo::ScopedMessagePipeHandle handle) {
   interfaces_->GetInterface(interface_name, std::move(handle));
 }
 
 }  // namespace content