Adds ability for chrome to behave as mojo_runner

mojo/shell/runner/host/child_process_host.h

 // 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.
 
 #ifndef MOJO_SHELL_RUNNER_HOST_CHILD_PROCESS_HOST_H_
 #define MOJO_SHELL_RUNNER_HOST_CHILD_PROCESS_HOST_H_
 
 #include <stdint.h>
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/process/process.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "mojo/edk/embedder/platform_channel_pair.h"
 #include "mojo/public/cpp/system/message_pipe.h"
+#include "mojo/shell/identity.h"
 #include "mojo/shell/runner/child/child_controller.mojom.h"
 #include "mojo/shell/runner/host/child_process_host.h"
 
 namespace base {
 class TaskRunner;
 }
 
 namespace mojo {
 namespace shell {
 
-struct CommandLineSwitch;
+class Identity;
+class NativeRunnerDelegate;
 
 // This class represents a "child process host". Handles launching and
 // connecting a platform-specific "pipe" to the child, and supports joining the
 // child process. Currently runs a single app (loaded from the file system).
 //
 // This class is not thread-safe. It should be created/used/destroyed on a
 // single thread.
 //
 // Note: Does not currently work on Windows before Vista.
 // Note: After |Start()|, |StartApp| must be called and this object must
 // remained alive until the |on_app_complete| callback is called.
 class ChildProcessHost {
  public:
   using ProcessReadyCallback = base::Callback<void(base::ProcessId)>;
 
   // |name| is just for debugging ease. We will spawn off a process so that it
   // can be sandboxed if |start_sandboxed| is true. |app_path| is a path to the
   // mojo application we wish to start.
   ChildProcessHost(base::TaskRunner* launch_process_runner,
+                   NativeRunnerDelegate* delegate,
                    bool start_sandboxed,
-                   const base::FilePath& app_path,
-                   const std::vector<CommandLineSwitch>& switches);
+                   const Identity& target,
+                   const base::FilePath& app_path);
   // Allows a ChildProcessHost to be instantiated for an existing channel
   // created by someone else (e.g. an app that launched its own process).
   explicit ChildProcessHost(ScopedHandle channel);
   virtual ~ChildProcessHost();
 
   // |Start()|s the child process; calls |DidStart()| (on the thread on which
   // |Start()| was called) when the child has been started (or failed to start).
   void Start(const ProcessReadyCallback& callback);
 
   // Waits for the child process to terminate, and returns its exit code.
   int Join();
 
   // See |mojom::ChildController|:
   void StartApp(
       InterfaceRequest<mojom::ShellClient> request,
       const mojom::ChildController::StartAppCallback& on_app_complete);
   void ExitNow(int32_t exit_code);
 
  protected:
   void DidStart(const ProcessReadyCallback& callback);
 
  private:
   void DoLaunch();
 
   void AppCompleted(int32_t result);
 
   scoped_refptr<base::TaskRunner> launch_process_runner_;
+  NativeRunnerDelegate* delegate_;
   bool start_sandboxed_;
+  Identity target_;
   const base::FilePath app_path_;
   base::Process child_process_;
   // Used for the ChildController binding.
   edk::PlatformChannelPair platform_channel_pair_;
   mojom::ChildControllerPtr controller_;
   mojom::ChildController::StartAppCallback on_app_complete_;
   edk::HandlePassingInformation handle_passing_info_;
 
   // Used to back the NodeChannel between the parent and child node.
   scoped_ptr<edk::PlatformChannelPair> node_channel_;
 
   // Since Start() calls a method on another thread, we use an event to block
   // the main thread if it tries to destruct |this| while launching the process.
   base::WaitableEvent start_child_process_event_;
 
   // A token the child can use to connect a primordial pipe to the host.
   std::string primordial_pipe_token_;
 
-  const std::vector<CommandLineSwitch> command_line_switches_;
-
   base::WeakPtrFactory<ChildProcessHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildProcessHost);
 };
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_RUNNER_HOST_CHILD_PROCESS_HOST_H_