Notify Files App when ARC++ app is installed/removed

components/arc/intent_helper/arc_intent_helper_bridge.h

 // 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.
 
 #ifndef COMPONENTS_ARC_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_
 #define COMPONENTS_ARC_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "ash/link_handler_model_factory.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/observer_list.h"
 #include "base/threading/thread_checker.h"
 #include "components/arc/arc_service.h"
 #include "components/arc/common/intent_helper.mojom.h"
 #include "components/arc/instance_holder.h"
+#include "components/arc/intent_helper/arc_intent_helper_observer.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 namespace ash {
 
 class LinkHandlerModel;
 
 }  // namespace ash
 
 namespace arc {
 
@@ skipping 16 matching lines @@
     // version is too old.
     FAILED_ARC_NOT_SUPPORTED,
   };
 
   ArcIntentHelperBridge(
       ArcBridgeService* bridge_service,
       const scoped_refptr<ActivityIconLoader>& icon_loader,
       const scoped_refptr<LocalActivityResolver>& activity_resolver);
   ~ArcIntentHelperBridge() override;
 
+  void AddObserver(ArcIntentHelperObserver* observer);
+  void RemoveObserver(ArcIntentHelperObserver* observer);
+
   // InstanceHolder<mojom::IntentHelperInstance>::Observer
   void OnInstanceReady() override;
   void OnInstanceClosed() override;
 
   // mojom::IntentHelperHost
   void OnIconInvalidated(const std::string& package_name) override;
   void OnIntentFiltersUpdated(
       std::vector<mojom::IntentFilterPtr> intent_filters) override;
   void OnOpenDownloads() override;
   void OnOpenUrl(const std::string& url) override;
@@ skipping 25 matching lines @@
 
   static const char kArcIntentHelperPackageName[];
 
  private:
   mojo::Binding<mojom::IntentHelperHost> binding_;
   scoped_refptr<ActivityIconLoader> icon_loader_;
   scoped_refptr<LocalActivityResolver> activity_resolver_;
 
   base::ThreadChecker thread_checker_;
 
+  base::ObserverList<ArcIntentHelperObserver> observer_list_;
+
   DISALLOW_COPY_AND_ASSIGN(ArcIntentHelperBridge);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_