Switch from Delegate to Observer.

components/arc/test/fake_arc_bridge_instance.cc

-// Copyright 2015 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 "components/arc/test/fake_arc_bridge_instance.h"
-
-#include <utility>
-
-#include "base/run_loop.h"
-
-namespace arc {
-
-FakeArcBridgeInstance::FakeArcBridgeInstance() : binding_(this) {}
-FakeArcBridgeInstance::~FakeArcBridgeInstance() {}
-
-void FakeArcBridgeInstance::Init(mojom::ArcBridgeHostPtr host) {
-  host_ptr_ = std::move(host);
-  init_calls_++;
-
-  // Wake WaitForInitCall().
-  if (!quit_closure_.is_null())
-    quit_closure_.Run();
-  quit_closure_.Reset();
-}
-
-void FakeArcBridgeInstance::Unbind() {
-  host_ptr_.reset();
-  if (binding_.is_bound())
-    binding_.Close();
-}
-
-void FakeArcBridgeInstance::Bind(
-    mojo::InterfaceRequest<mojom::ArcBridgeInstance> interface_request) {
-  binding_.Bind(std::move(interface_request));
-}
-
-void FakeArcBridgeInstance::WaitForInitCall() {
-  base::RunLoop run_loop;
-  quit_closure_ = run_loop.QuitClosure();
-  binding_.set_connection_error_handler(run_loop.QuitClosure());
-  run_loop.Run();
-}
-
-void FakeArcBridgeInstance::Stop(ArcBridgeService::StopReason reason) {
-  if (!delegate_)
-    return;
-  delegate_->OnStopped(reason);
-}
-
-}  // namespace arc