Allow mojo_runner to connect to arbitrary executables.

mojo/shell/native_runner.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 MOJO_SHELL_NATIVE_RUNNER_H_
 #define MOJO_SHELL_NATIVE_RUNNER_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "mojo/application/public/interfaces/application.mojom.h"
@@ skipping 25 matching lines @@
   // file to decide what kind of NativeRunner to make.
   virtual void Start(const base::FilePath& app_path,
                      bool start_sandboxed,
                      InterfaceRequest<Application> application_request,
                      const base::Closure& app_completed_callback) = 0;
 };
 
 class NativeRunnerFactory {
  public:
   virtual ~NativeRunnerFactory() {}
-  virtual scoped_ptr<NativeRunner> Create() = 0;
+  virtual scoped_ptr<NativeRunner> Create(const base::FilePath& app_path) = 0;
 };
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_NATIVE_RUNNER_H_