Use token-based initialisation for the utility process MojoApplication.

content/child/mojo/mojo_application.cc

 // Copyright 2014 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/child/mojo/mojo_application.h"
 
 #include <utility>
 
 #include "build/build_config.h"
 #include "content/child/child_process.h"
 #include "content/common/application_setup.mojom.h"
 #include "content/common/mojo/channel_init.h"
 #include "content/common/mojo/mojo_messages.h"
 #include "ipc/ipc_message.h"
+#include "mojo/edk/embedder/embedder.h"
 #include "mojo/public/cpp/bindings/interface_ptr.h"
 
 namespace content {
 
 MojoApplication::MojoApplication(
     scoped_refptr<base::SequencedTaskRunner> io_task_runner)
     : io_task_runner_(io_task_runner) {
   DCHECK(io_task_runner_);
 }
 
 MojoApplication::~MojoApplication() {
 }
 
 bool MojoApplication::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(MojoApplication, msg)
     IPC_MESSAGE_HANDLER(MojoMsg_Activate, OnActivate)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
+void MojoApplication::InitWithToken(std::string token) {
+  mojo::ScopedMessagePipeHandle handle =
+      mojo::edk::CreateChildMessagePipe(token);
+  InitWithPipe(std::move(handle));
+}
+
+void MojoApplication::InitWithPipe(mojo::ScopedMessagePipeHandle handle) {
+  DCHECK(handle.is_valid());
+
+  mojom::ApplicationSetupPtr application_setup;
+  application_setup.Bind(
+      mojo::InterfacePtrInfo<mojom::ApplicationSetup>(std::move(handle), 0u));
+
+  mojo::shell::mojom::InterfaceProviderPtr services;
+  mojo::shell::mojom::InterfaceProviderPtr exposed_services;
+  service_registry_.Bind(GetProxy(&exposed_services));
+  application_setup->ExchangeInterfaceProviders(GetProxy(&services),
+                                                std::move(exposed_services));
+  service_registry_.BindRemoteServiceProvider(std::move(services));
+}
+
 void MojoApplication::OnActivate(
     const IPC::PlatformFileForTransit& file) {
 #if defined(OS_POSIX)
   base::PlatformFile handle = file.fd;
 #elif defined(OS_WIN)
   base::PlatformFile handle = file.GetHandle();
 #endif
 
   mojo::ScopedMessagePipeHandle pipe =
       channel_init_.Init(handle, io_task_runner_);
   DCHECK(pipe.is_valid());
 
   mojom::ApplicationSetupPtr application_setup;
   application_setup.Bind(
       mojo::InterfacePtrInfo<mojom::ApplicationSetup>(std::move(pipe), 0u));
 
   mojo::shell::mojom::InterfaceProviderPtr services;
   mojo::shell::mojom::InterfaceProviderPtr exposed_services;
   service_registry_.Bind(GetProxy(&exposed_services));
   application_setup->ExchangeInterfaceProviders(GetProxy(&services),
                                                 std::move(exposed_services));
   service_registry_.BindRemoteServiceProvider(std::move(services));
 }
 
 }  // namespace content