ServiceWorker: Make SWProviderHost listen to SWRegistration

content/browser/service_worker/service_worker_provider_host.h

Index: content/browser/service_worker/service_worker_provider_host.h
diff --git a/content/browser/service_worker/service_worker_provider_host.h b/content/browser/service_worker/service_worker_provider_host.h
index 3175ef10d160dc8abfb8df41266eb0bddd38adf6..2eb117c4d8af71939f3f2971a2bd34d69d1624e8 100644
--- a/content/browser/service_worker/service_worker_provider_host.h
+++ b/content/browser/service_worker/service_worker_provider_host.h
@@ -10,6 +10,7 @@
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "content/browser/service_worker/service_worker_registration.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/public/common/resource_type.h"
@@ -38,13 +39,20 @@ class ServiceWorkerVersion;
 // Note this class can also host a running service worker, in which
 // case it will observe resource loads made directly by the service worker.
 class CONTENT_EXPORT ServiceWorkerProviderHost
-    : public base::SupportsWeakPtr<ServiceWorkerProviderHost> {
+    : public ServiceWorkerRegistration::Listener,
+      public base::SupportsWeakPtr<ServiceWorkerProviderHost> {
  public:
   ServiceWorkerProviderHost(int process_id,
                             int provider_id,
                             base::WeakPtr<ServiceWorkerContextCore> context,
                             ServiceWorkerDispatcherHost* dispatcher_host);
-  ~ServiceWorkerProviderHost();
+  virtual ~ServiceWorkerProviderHost();
+
+  // ServiceWorkerRegistration::Listener overrides.
+  virtual void OnVersionAttributesChanged(
+      ServiceWorkerRegistration* registration,
+      ChangedVersionAttributesMask changed_mask,
+      const ServiceWorkerRegistrationInfo& info) OVERRIDE;
 
   int process_id() const { return process_id_; }
   int provider_id() const { return provider_id_; }
@@ -100,6 +108,9 @@ class CONTENT_EXPORT ServiceWorkerProviderHost
   // Returns true if |version| can be associated with this provider.
   bool CanAssociateVersion(ServiceWorkerVersion* version);
 
+  // Associates to |registration| to listen its version change events.

[falken, 2014/08/05 02:41:28]

s/listen/listen for/g

[nhiroki, 2014/08/05 15:51:12]

Done.

+  void AssociateRegistration(ServiceWorkerRegistration* registration);
+
   // Returns true if the context referred to by this host (i.e. |context_|) is
   // still alive.
   bool IsContextAlive();
@@ -118,6 +129,8 @@ class CONTENT_EXPORT ServiceWorkerProviderHost
   const int provider_id_;
   GURL document_url_;
 
+  scoped_refptr<ServiceWorkerRegistration> associated_registration_;
+
   scoped_refptr<ServiceWorkerVersion> controlling_version_;
   scoped_refptr<ServiceWorkerVersion> active_version_;
   scoped_refptr<ServiceWorkerVersion> waiting_version_;