arc-bridge: Restart ARC instance on crash

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>
 
 namespace arc {
 
 FakeArcBridgeInstance::FakeArcBridgeInstance() : binding_(this) {}
 FakeArcBridgeInstance::~FakeArcBridgeInstance() {}
 
 void FakeArcBridgeInstance::Init(ArcBridgeHostPtr host) {
   host_ptr_ = std::move(host);
+  init_calls_++;
+}
+
+void FakeArcBridgeInstance::Unbind() {
+  host_ptr_.reset();
+  if (binding_.is_bound())
+    binding_.Close();
 }
 
 void FakeArcBridgeInstance::Bind(
     mojo::InterfaceRequest<ArcBridgeInstance> interface_request) {
   binding_.Bind(std::move(interface_request));
 }
 
+void FakeArcBridgeInstance::WaitForInitCall() {
+  binding_.WaitForIncomingMethodCall();
+}
+
 }  // namespace arc