ServiceWorker: Implement navigate() method in WindowClient (chromium side).

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 ad15ed14df2a38f20f43f2bb5708b2d97c76b98e..25b835c75b5097c612da68fbcfcaa6300995b2ec 100644
--- a/content/common/service_worker/service_worker_messages.h
+++ b/content/common/service_worker/service_worker_messages.h
@@ -278,6 +278,12 @@ IPC_MESSAGE_ROUTED2(ServiceWorkerHostMsg_FocusClient,
                     int /* request_id */,
                     std::string /* uuid */)
 
+// Ask the browser to navigate a client (renderer->browser).
+IPC_MESSAGE_ROUTED3(ServiceWorkerHostMsg_NavigateClient,
+                    int /* request_id */,
+                    std::string /* uuid */,
+                    GURL /* url */)
+
 // Asks the browser to force this worker to become activated.
 IPC_MESSAGE_ROUTED1(ServiceWorkerHostMsg_SkipWaiting,
                     int /* request_id */)
@@ -485,6 +491,16 @@ IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_FocusClientResponse,
                      int /* request_id */,
                      content::ServiceWorkerClientInfo /* client */)
 
+// Sent via EmbeddedWorker as a response of NavigateClient.
+IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_NavigateClientResponse,
+                     int /* request_id */,
+                     content::ServiceWorkerClientInfo /* client */)
+
+// Sent via EmbeddedWorker as an error response of NavigateClient.
+IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_NavigateClientError,
+                     int /* request_id */,
+                     std::string /* message */)
+
 // Sent via EmbeddedWorker to transfer a stashed message port to the worker.
 IPC_MESSAGE_CONTROL3(
     ServiceWorkerMsg_SendStashedMessagePorts,