Allow mojo_runner to connect to arbitrary executables.

mojo/runner/in_process_native_runner.h

Index: mojo/runner/in_process_native_runner.h
diff --git a/mojo/runner/in_process_native_runner.h b/mojo/runner/in_process_native_runner.h
index c46a14758694955e05eeea0eb3a3a607e5a6e74b..216742584d4c4e0e3c7359f7fcc09301761e8f13 100644
--- a/mojo/runner/in_process_native_runner.h
+++ b/mojo/runner/in_process_native_runner.h
@@ -52,7 +52,8 @@ class InProcessNativeRunnerFactory : public shell::NativeRunnerFactory {
   explicit InProcessNativeRunnerFactory(Context* context) : context_(context) {}
   ~InProcessNativeRunnerFactory() override {}
 
-  scoped_ptr<shell::NativeRunner> Create() override;
+  scoped_ptr<shell::NativeRunner> Create(
+      const base::FilePath& app_path) override;
 
  private:
   Context* const context_;