Better coordinate what's responsible for associating a registration to a document. During navigatio…

content/browser/service_worker/service_worker_provider_host.cc

 // Copyright 2013 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/browser/service_worker/service_worker_provider_host.h"
 
 #include "base/stl_util.h"
 #include "content/browser/message_port_message_filter.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_request_handler.h"
@@ skipping 10 matching lines @@
 
 static const int kDocumentMainThreadId = 0;
 
 ServiceWorkerProviderHost::ServiceWorkerProviderHost(
     int process_id, int provider_id,
     base::WeakPtr<ServiceWorkerContextCore> context,
     ServiceWorkerDispatcherHost* dispatcher_host)
     : process_id_(process_id),
       provider_id_(provider_id),
       context_(context),
-      dispatcher_host_(dispatcher_host) {
+      dispatcher_host_(dispatcher_host),
+      allow_association_(true) {
 }
 
 ServiceWorkerProviderHost::~ServiceWorkerProviderHost() {
   // Clear docurl so the deferred activation of a waiting worker
   // won't associate the new version with a provider being destroyed.
   document_url_ = GURL();
   if (controlling_version_.get())
     controlling_version_->RemoveControllee(this);
   if (associated_registration_.get()) {
     DecreaseProcessReference(associated_registration_->pattern());
@@ skipping 134 matching lines @@
   }
   return scoped_ptr<ServiceWorkerRequestHandler>();
 }
 
 bool ServiceWorkerProviderHost::CanAssociateRegistration(
     ServiceWorkerRegistration* registration) {
   if (!context_)
     return false;
   if (running_hosted_version_.get())
     return false;
-  if (!registration || associated_registration_.get())
+  if (!registration || associated_registration_.get() || !allow_association_)
     return false;
   return true;
 }
 
 void ServiceWorkerProviderHost::PostMessage(
     const base::string16& message,
     const std::vector<int>& sent_message_port_ids) {
   if (!dispatcher_host_)
     return;  // Could be NULL in some tests.
 
@@ skipping 46 matching lines @@
     context_->process_manager()->RemoveProcessReferenceFromPattern(
         pattern, process_id_);
   }
 }
 
 bool ServiceWorkerProviderHost::IsContextAlive() {
   return context_ != NULL;
 }
 
 }  // namespace content