Service Worker: Add ServiceWorkerContainer.getRegistrations() method.

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 d18bef7f3d7cbb74e02b505714d78832b73ba906..c2fdbd52805f2158a56b464df2b5c3d344a4f668 100644
--- a/content/common/service_worker/service_worker_messages.h
+++ b/content/common/service_worker/service_worker_messages.h
@@ -131,6 +131,11 @@ IPC_MESSAGE_CONTROL4(ServiceWorkerHostMsg_GetRegistration,
                      int /* provider_id */,
                      GURL /* document_url */)
 
+IPC_MESSAGE_CONTROL3(ServiceWorkerHostMsg_GetRegistrations,
+                     int /* thread_id */,
+                     int /* request_id */,
+                     int /* provider_id */)
+
 IPC_MESSAGE_CONTROL3(ServiceWorkerHostMsg_GetRegistrationForReady,
                      int /* thread_id */,
                      int /* request_id */,
@@ -310,6 +315,13 @@ IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_DidGetRegistration,
                      content::ServiceWorkerRegistrationObjectInfo,
                      content::ServiceWorkerVersionAttributes)
 
+// Response to ServiceWorkerHostMsg_GetRegistrations.
+IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_DidGetRegistrations,
+                     int /* thread_id */,
+                     int /* request_id */,
+                     std::vector<content::ServiceWorkerRegistrationObjectInfo>,
+                     std::vector<content::ServiceWorkerVersionAttributes>)
+
 // Response to ServiceWorkerHostMsg_GetRegistrationForReady.
 IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_DidGetRegistrationForReady,
                      int /* thread_id */,
@@ -341,6 +353,14 @@ IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_ServiceWorkerGetRegistrationError,
                      blink::WebServiceWorkerError::ErrorType /* code */,
                      base::string16 /* message */)
 
+// Sent when any kind of registration error occurs during a
+// GetRegistrations handler above.
+IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_ServiceWorkerGetRegistrationsError,
+                     int /* thread_id */,
+                     int /* request_id */,
+                     blink::WebServiceWorkerError::ErrorType /* code */,
+                     base::string16 /* message */)
+
 // Informs the child process that the ServiceWorker's state has changed.
 IPC_MESSAGE_CONTROL3(ServiceWorkerMsg_ServiceWorkerStateChanged,
                      int /* thread_id */,