Service Worker: Add Clients.get(id)

content/common/service_worker/service_worker_messages.h

Index: content/common/service_worker/service_worker_messages.h
diff --git a/content/common/service_worker/service_worker_messages.h b/content/common/service_worker/service_worker_messages.h
index eb37c4fb41c4c2cbba367ac6585dca8d51518b30..a6c184983502ec80aaae9cf4f6abac29a96a7463 100644
--- a/content/common/service_worker/service_worker_messages.h
+++ b/content/common/service_worker/service_worker_messages.h
@@ -243,6 +243,11 @@ IPC_MESSAGE_ROUTED1(ServiceWorkerHostMsg_GeofencingEventFinished,
 // Routed to the target ServiceWorkerVersion.
 IPC_MESSAGE_ROUTED0(ServiceWorkerHostMsg_Pong)
 
+// Asks the browser to retrieve client of the sender ServiceWorker.
+IPC_MESSAGE_ROUTED2(ServiceWorkerHostMsg_GetClient,
+                    int /* request_id */,
+                    std::string)
+
 // Asks the browser to retrieve clients of the sender ServiceWorker.
 IPC_MESSAGE_ROUTED2(ServiceWorkerHostMsg_GetClients,
                     int /* request_id */,
@@ -468,6 +473,11 @@ IPC_MESSAGE_CONTROL3(ServiceWorkerMsg_ClaimClientsError,
 // Sent via EmbeddedWorker to Ping the worker, expecting a Pong in response.
 IPC_MESSAGE_CONTROL0(ServiceWorkerMsg_Ping)
 
+// Sent via EmbeddedWorker as a response of GetClient.
+IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_DidGetClient,
+                     int /* request_id */,
+                     content::ServiceWorkerClientInfo)
+
 // Sent via EmbeddedWorker as a response of GetClients.
 IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_DidGetClients,
                      int /* request_id */,