Allow mojo_runner to connect to arbitrary executables.

mojo/runner/native_runner_unittest.cc

Index: mojo/runner/native_runner_unittest.cc
diff --git a/mojo/runner/native_runner_unittest.cc b/mojo/runner/native_runner_unittest.cc
index b2516b0547942d2f9f48f06d3ca138dfa05d5b3d..cadf9df31ab0e4cf0961458529f789be997e1f4b 100644
--- a/mojo/runner/native_runner_unittest.cc
+++ b/mojo/runner/native_runner_unittest.cc
@@ -50,7 +50,7 @@ class TestNativeRunnerFactory : public shell::NativeRunnerFactory {
  public:
   explicit TestNativeRunnerFactory(TestState* state) : state_(state) {}
   ~TestNativeRunnerFactory() override {}
-  scoped_ptr<shell::NativeRunner> Create() override {
+  scoped_ptr<shell::NativeRunner> Create(const base::FilePath& path) override {
     return scoped_ptr<shell::NativeRunner>(new TestNativeRunner(state_));
   }