arc: Notify ARC instance failures via callbacks.

components/arc/arc_bridge_service_impl.h

 // 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.
 
 #ifndef COMPONENTS_ARC_ARC_BRIDGE_SERVICE_IMPL_H_
 #define COMPONENTS_ARC_ARC_BRIDGE_SERVICE_IMPL_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 26 matching lines @@
   void Shutdown() override;
 
   // Normally, reconnecting after connection shutdown happens after a short
   // delay. When testing, however, we'd like it to happen immediately to avoid
   // adding unnecessary delays.
   void DisableReconnectDelayForTesting();
 
  private:
   friend class ArcBridgeTest;
   FRIEND_TEST_ALL_PREFIXES(ArcBridgeTest, Restart);
+  FRIEND_TEST_ALL_PREFIXES(ArcBridgeTest, OnBridgeStopped);
 
   // If all pre-requisites are true (ARC is available, it has been enabled, and
   // the session has started), and ARC is stopped, start ARC. If ARC is running
   // and the pre-requisites stop being true, stop ARC.
   void PrerequisitesChanged();
 
   // Stops the running instance.
   void StopInstance();
 
   // ArcBridgeBootstrap::Delegate:
   void OnConnectionEstablished(mojom::ArcBridgeInstancePtr instance) override;
-  void OnStopped() override;
+  void OnStopped(StopReason reason) override;
 
   // Called when the bridge channel is closed. This typically only happens when
   // the ARC instance crashes. This is not called during shutdown.
   void OnChannelClosed();
 
   std::unique_ptr<ArcBridgeBootstrap> bootstrap_;
 
   // Mojo endpoints.
   mojo::Binding<mojom::ArcBridgeHost> binding_;
   mojom::ArcBridgeInstancePtr instance_ptr_;
@@ skipping 10 matching lines @@
 
   // WeakPtrFactory to use callbacks.
   base::WeakPtrFactory<ArcBridgeServiceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcBridgeServiceImpl);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_ARC_BRIDGE_SERVICE_IMPL_H_