Remove mojo/apps/js, it is unused

mojo/apps/js/test/run_apps_js_tests.cc

-// Copyright 2013 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.
-
-#include "base/files/file_path.h"
-#include "base/path_service.h"
-#include "gin/modules/console.h"
-#include "gin/modules/module_registry.h"
-#include "gin/modules/timer.h"
-#include "gin/test/file_runner.h"
-#include "gin/test/gtest.h"
-#include "mojo/apps/js/bindings/monotonic_clock.h"
-#include "mojo/apps/js/bindings/threading.h"
-#include "mojo/bindings/js/core.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace mojo {
-namespace js {
-namespace {
-
-class TestRunnerDelegate : public gin::FileRunnerDelegate {
- public:
-  TestRunnerDelegate() {
-    AddBuiltinModule(gin::Console::kModuleName, gin::Console::GetModule);
-    AddBuiltinModule(Core::kModuleName, Core::GetModule);
-    AddBuiltinModule(gin::TimerModule::kName, gin::TimerModule::GetModule);
-    AddBuiltinModule(apps::MonotonicClock::kModuleName,
-                     apps::MonotonicClock::GetModule);
-    AddBuiltinModule(apps::Threading::kModuleName, apps::Threading::GetModule);
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TestRunnerDelegate);
-};
-
-void RunTest(std::string test, bool run_until_idle) {
-  base::FilePath path;
-  PathService::Get(base::DIR_SOURCE_ROOT, &path);
-  path = path.AppendASCII("mojo")
-             .AppendASCII("apps")
-             .AppendASCII("js")
-             .AppendASCII("bindings")
-             .AppendASCII(test);
-  TestRunnerDelegate delegate;
-  gin::RunTestFromFile(path, &delegate, run_until_idle);
-}
-
-// TODO(abarth): Should we autogenerate these stubs from GYP?
-
-TEST(JSTest, sample_test) {
-  RunTest("sample_service_unittests.js", true);
-}
-
-TEST(JSTest, connection) {
-  RunTest("connection_unittests.js", false);
-}
-
-TEST(JSTest, monotonic_clock) {
-  RunTest("monotonic_clock_unittests.js", false);
-}
-
-}  // namespace
-}  // namespace js
-}  // namespace mojo