arc: Revamp the ArcBridgeService interface

chrome/browser/task_management/providers/arc/arc_process_task.h

Index: chrome/browser/task_management/providers/arc/arc_process_task.h
diff --git a/chrome/browser/task_management/providers/arc/arc_process_task.h b/chrome/browser/task_management/providers/arc/arc_process_task.h
index 9cae4d868ede965fefba38a1c96535a64bdbd69e..5fb6045fbbc1499c5783a529b242667e6e09fd34 100644
--- a/chrome/browser/task_management/providers/arc/arc_process_task.h
+++ b/chrome/browser/task_management/providers/arc/arc_process_task.h
@@ -19,7 +19,9 @@
 namespace task_management {
 
 // Defines a task that represents an ARC process.
-class ArcProcessTask : public Task, public arc::ArcBridgeService::Observer {
+class ArcProcessTask : public Task,
+                       public arc::ArcBridgeService::InstanceObserver<
+                           arc::mojom::IntentHelperInstance> {
  public:
   ArcProcessTask(base::ProcessId pid,
                  base::ProcessId nspid,
@@ -34,8 +36,9 @@ class ArcProcessTask : public Task, public arc::ArcBridgeService::Observer {
   bool IsKillable() override;
   void Kill() override;
 
-  // arc::ArcBridgeService::Observer:
-  void OnIntentHelperInstanceReady() override;
+  // arc::ArcBridgeService::InstanceObserver<arc::mojom::IntentHelperInstance>:
+  void OnInstanceReady(arc::mojom::IntentHelperInstance*,
+                       uint32_t version) override;
 
   void SetProcessState(arc::mojom::ProcessState process_state);