Allow mojo_runner to connect to arbitrary executables.

mojo/application/public/cpp/BUILD.gn

 # 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.
 
 # GYP version: mojo/mojo_base.gyp:mojo_application_base
 source_set("cpp") {
   public_deps = [
     ":sources",
     ":init_commandline",
   ]
@@ skipping 84 matching lines @@
     "//third_party/mojo/src/mojo/public/cpp/bindings",
     "//third_party/mojo/src/mojo/public/cpp/environment",
     "//third_party/mojo/src/mojo/public/cpp/system",
     "//testing/gtest",
   ]
 
   data_deps = []
   if (is_android) {
     data_deps += [ "//mojo/android" ]
   }
-  if (!is_component_build) {
-    data_deps += [ "//mojo/runner" ]
-  }
 }