arc: Notify ARC instance failures via callbacks.

components/arc/test/fake_arc_bridge_bootstrap.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 "components/arc/test/fake_arc_bridge_bootstrap.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "components/arc/common/arc_bridge.mojom.h"
@@ skipping 10 matching lines @@
 void FakeArcBridgeBootstrap::Start() {
   DCHECK(delegate_);
   mojom::ArcBridgeInstancePtr instance;
   instance_->Bind(mojo::GetProxy(&instance));
   delegate_->OnConnectionEstablished(std::move(instance));
 }
 
 void FakeArcBridgeBootstrap::Stop() {
   DCHECK(delegate_);
   instance_->Unbind();
-  delegate_->OnStopped();
+  delegate_->OnStopped(StopReason::NO_ERROR);
 }
 
-void FakeArcBridgeBootstrap::OnCrashed() {
-  Stop();
+void FakeArcBridgeBootstrap::OnCrashed(StopReason reason) {
+  DCHECK(delegate_);
+  instance_->Unbind();
+  delegate_->OnStopped(reason);
 }
 
 }  // namespace arc