Remove navigation_service_unittests, along with the service itself.

services/navigation/navigation.cc

-// Copyright 2016 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 "services/navigation/navigation.h"
-
-#include "base/bind.h"
-#include "base/memory/ptr_util.h"
-#include "base/message_loop/message_loop.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-#include "services/navigation/view_impl.h"
-#include "services/service_manager/public/cpp/connector.h"
-#include "services/service_manager/public/cpp/service_context.h"
-
-namespace navigation {
-
-namespace {
-
-void CreateViewOnViewTaskRunner(
-    std::unique_ptr<service_manager::Connector> connector,
-    const std::string& client_user_id,
-    mojom::ViewClientPtr client,
-    mojom::ViewRequest request,
-    std::unique_ptr<service_manager::ServiceContextRef> context_ref) {
-  mojo::MakeStrongBinding(
-      base::MakeUnique<ViewImpl>(std::move(connector), client_user_id,
-                                 std::move(client), std::move(context_ref)),
-      std::move(request));
-}
-
-}  // namespace
-
-std::unique_ptr<service_manager::Service> CreateNavigationService() {
-  return base::MakeUnique<Navigation>();
-}
-
-Navigation::Navigation()
-    : view_task_runner_(base::ThreadTaskRunnerHandle::Get()),
-      ref_factory_(base::MessageLoop::QuitWhenIdleClosure()) {
-  bindings_.set_connection_error_handler(
-      base::Bind(&Navigation::ViewFactoryLost, base::Unretained(this)));
-  registry_.AddInterface<mojom::ViewFactory>(
-      base::Bind(&Navigation::BindViewFactoryRequest, base::Unretained(this)));
-}
-Navigation::~Navigation() {}
-
-void Navigation::OnBindInterface(
-    const service_manager::BindSourceInfo& source_info,
-    const std::string& interface_name,
-    mojo::ScopedMessagePipeHandle interface_pipe) {
-  std::string remote_user_id = source_info.identity.user_id();
-  if (!client_user_id_.empty() && client_user_id_ != remote_user_id) {
-    LOG(ERROR) << "Must have a separate Navigation service instance for "
-               << "different BrowserContexts.";
-    return;
-  }
-  client_user_id_ = remote_user_id;
-  registry_.BindInterface(source_info, interface_name,
-                          std::move(interface_pipe));
-}
-
-void Navigation::CreateView(mojom::ViewClientPtr client,
-                            mojom::ViewRequest request) {
-  std::unique_ptr<service_manager::Connector> new_connector =
-      context()->connector()->Clone();
-  std::unique_ptr<service_manager::ServiceContextRef> context_ref =
-      ref_factory_.CreateRef();
-  view_task_runner_->PostTask(
-      FROM_HERE,
-      base::Bind(&CreateViewOnViewTaskRunner, base::Passed(&new_connector),
-                 client_user_id_, base::Passed(&client), base::Passed(&request),
-                 base::Passed(&context_ref)));
-}
-
-void Navigation::BindViewFactoryRequest(
-    const service_manager::BindSourceInfo& source_info,
-    mojom::ViewFactoryRequest request) {
-  bindings_.AddBinding(this, std::move(request));
-  refs_.insert(ref_factory_.CreateRef());
-}
-
-void Navigation::ViewFactoryLost() {
-  refs_.erase(refs_.begin());
-}
-
-}  // navigation