arc: Add InstanceHelper::GetInstanceForMethod()

chrome/browser/ui/app_list/arc/arc_app_utils.cc

Index: chrome/browser/ui/app_list/arc/arc_app_utils.cc
diff --git a/chrome/browser/ui/app_list/arc/arc_app_utils.cc b/chrome/browser/ui/app_list/arc/arc_app_utils.cc
index 1589e30f076388ace68bb5a580d978c085ea8c8d..3e401b237edc00298c4828dc1815174c145f57c2 100644
--- a/chrome/browser/ui/app_list/arc/arc_app_utils.cc
+++ b/chrome/browser/ui/app_list/arc/arc_app_utils.cc
@@ -60,21 +60,8 @@ arc::mojom::AppInstance* GetAppInstance(int required_version,
     return nullptr;
   }
 
-  arc::mojom::AppInstance* app_instance = bridge_service->app()->instance();
-  if (!app_instance) {
-    VLOG(2) << "Request to " << service_name
-            << " when mojom::app_instance is not ready.";
-    return nullptr;
-  }
-
-  int bridge_version = bridge_service->app()->version();
-  if (bridge_version < required_version) {
-    VLOG(2) << "Request to " << service_name << " when Arc version "
-            << bridge_version << " does not support it.";
-    return nullptr;
-  }
-
-  return app_instance;
+  return bridge_service->app()->GetInstanceForVersion(required_version,
+                                                      service_name.c_str());
 }
 
 void PrioritizeArcInstanceCallback(bool success) {
@@ -304,16 +291,11 @@ void ShowTalkBackSettings() {
     return;
   }
 
-  arc::mojom::IntentHelperInstance *intent_helper_instance =
-      bridge_service->intent_helper()->instance();
-  if (!intent_helper_instance) {
-    VLOG(2) << "ARC intent helper instance is not ready";
+  auto* intent_helper_instance =
+      bridge_service->intent_helper()->GetInstanceForVersion(
+          kSendBroadcastMinVersion, "SendBroadcast");
+  if (!intent_helper_instance)
     return;
-  }
-  if (bridge_service->intent_helper()->version() < kSendBroadcastMinVersion) {
-    VLOG(2) << "ARC intent helper instance is too old";
-    return;
-  }
 
   intent_helper_instance->SendBroadcast(
           "org.chromium.arc.intent_helper.SHOW_TALKBACK_SETTINGS",