Service Worker: Add ServiceWorkerContainer.getRegistrations() method.

content/common/service_worker/service_worker_types.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/service_worker/service_worker_types.h"
 
 namespace content {
 
 const char kServiceWorkerRegisterErrorPrefix[] =
     "Failed to register a ServiceWorker: ";
 const char kServiceWorkerUnregisterErrorPrefix[] =
     "Failed to unregister a ServiceWorkerRegistration: ";
 const char kServiceWorkerGetRegistrationErrorPrefix[] =
     "Failed to get a ServiceWorkerRegistration: ";
+const char kServiceWorkerGetRegistrationsErrorPrefix[] =
+    "Failed to get ServiceWorkerRegistration objects: ";
 const char kFetchScriptError[] =
     "An unknown error occurred when fetching the script.";
 
 ServiceWorkerFetchRequest::ServiceWorkerFetchRequest()
     : mode(FETCH_REQUEST_MODE_NO_CORS),
       request_context_type(REQUEST_CONTEXT_TYPE_UNSPECIFIED),
       frame_type(REQUEST_CONTEXT_FRAME_TYPE_NONE),
       blob_size(0),
       credentials_mode(FETCH_CREDENTIALS_MODE_OMIT),
       is_reload(false) {
@@ skipping 55 matching lines @@
     : handle_id(kInvalidServiceWorkerRegistrationHandleId),
       registration_id(kInvalidServiceWorkerRegistrationId) {
 }
 
 ServiceWorkerClientQueryOptions::ServiceWorkerClientQueryOptions()
     : client_type(blink::WebServiceWorkerClientTypeWindow),
       include_uncontrolled(false) {
 }
 
 }  // namespace content