arc: Revamp the ArcBridgeService interface

components/arc/ime/arc_ime_bridge_impl.h

Index: components/arc/ime/arc_ime_bridge_impl.h
diff --git a/components/arc/ime/arc_ime_bridge_impl.h b/components/arc/ime/arc_ime_bridge_impl.h
index a694ac3993d4b3c99b2271de58a9f916f2d1298f..fdb086068ccbbfa414ac66f30162a8a482f67bbf 100644
--- a/components/arc/ime/arc_ime_bridge_impl.h
+++ b/components/arc/ime/arc_ime_bridge_impl.h
@@ -22,15 +22,17 @@ namespace arc {
 
 // This class encapsulates the detail of IME related IPC between
 // Chromium and the ARC container.
-class ArcImeBridgeImpl : public ArcImeBridge,
-                         public mojom::ImeHost,
-                         public ArcBridgeService::Observer {
+class ArcImeBridgeImpl
+    : public ArcImeBridge,
+      public mojom::ImeHost,
+      public ArcBridgeService::InstanceObserver<mojom::ImeInstance> {
  public:
   ArcImeBridgeImpl(Delegate* delegate, ArcBridgeService* bridge_service);
   ~ArcImeBridgeImpl() override;
 
-  // arc::ArcBridgeService::Observer overrides:
-  void OnImeInstanceReady() override;
+  // arc::ArcBridgeService::InstanceObserver<mojom::ImeInstance> overrides:
+  void OnInstanceReady(mojom::ImeInstance* ime_instance,
+                       uint32_t version) override;
 
   // ArcImeBridge overrides:
   void SendSetCompositionText(const ui::CompositionText& composition) override;