Change userid from a uint32_t to a string guid

mojo/shell/tests/lifecycle/lifecycle_unittest.cc

 // 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.
 
 #include "base/base_paths.h"
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/path_service.h"
@@ skipping 200 matching lines @@
     filter->filter.insert("*", std::move(test_interfaces));
 
     mojo::shell::mojom::ShellPtr shell;
     connector()->ConnectToInterface("mojo:shell", &shell);
 
     mojo::shell::mojom::ShellClientFactoryPtr factory;
     factory.Bind(mojo::InterfacePtrInfo<mojo::shell::mojom::ShellClientFactory>(
         std::move(pipe), 0u));
 
     shell->CreateInstanceForFactory(std::move(factory), kTestExeName,
-                                    mojom::Connector::kUserInherit,
-                                    std::move(filter), std::move(request));
+                                    mojom::kInheritUserID, std::move(filter),
+                                    std::move(request));
 
     base::LaunchOptions options;
   #if defined(OS_WIN)
     options.handles_to_inherit = &handle_passing_info;
   #elif defined(OS_POSIX)
     options.fds_to_remap = &handle_passing_info;
   #endif
     base::Process process = base::LaunchProcess(child_command_line, options);
     DCHECK(process.IsValid());
     receiver->SetPID(process.Pid());
@@ skipping 265 matching lines @@
   loop.Run();
 
   WaitForInstanceDestruction();
   EXPECT_FALSE(instances()->HasInstanceForName(kTestExeName));
   EXPECT_EQ(0u, instances()->GetNewInstanceCount());
 }
 
 
 }  // namespace shell
 }  // namespace mojo