The blink half of the new ServiceWorker 'sync' event.

The browser side is https://codereview.chromium.org/205033002/

BUG=354112

Review URL: https://codereview.chromium.org/205013002

git-svn-id: svn://svn.chromium.org/blink/trunk@170165 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/events/EventTypeNames.in

@@ -172,6 +172,7 @@ storage
 submit
 success
 suspend
+sync
 textInput
 timeout
 timeupdate

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScope.h

@@ -54,6 +54,7 @@ public:
     DEFINE_ATTRIBUTE_EVENT_LISTENER(install);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(activate);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(fetch);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(sync);
 
     virtual void trace(Visitor*) OVERRIDE;
 

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScope.idl

@@ -34,4 +34,5 @@
   attribute EventHandler oninstall;
   attribute EventHandler onactivate;
   attribute EventHandler onfetch;
+  attribute EventHandler onsync;
 };

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScopeClient.h

@@ -50,6 +50,7 @@ public:
     virtual void didHandleInstallEvent(int installEventID, blink::WebServiceWorkerEventResult) = 0;
     // A null response means no valid response was provided by the service worker, so fallback to native.
     virtual void didHandleFetchEvent(int fetchEventID, PassRefPtr<Response> = nullptr) = 0;
+    virtual void didHandleSyncEvent(int syncEventID) = 0;
 
     static const char* supplementName();
     static ServiceWorkerGlobalScopeClient* from(ExecutionContext*);

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeClientImpl.cpp

@@ -50,14 +50,11 @@ ServiceWorkerGlobalScopeClientImpl::~ServiceWorkerGlobalScopeClientImpl()
 
 void ServiceWorkerGlobalScopeClientImpl::didHandleInstallEvent(int installEventID, WebServiceWorkerEventResult result)
 {
-    if (m_client)
-        m_client->didHandleInstallEvent(installEventID, result);
+    m_client->didHandleInstallEvent(installEventID, result);
 }
 
 void ServiceWorkerGlobalScopeClientImpl::didHandleFetchEvent(int fetchEventID, PassRefPtr<WebCore::Response> response)
 {
-    if (!m_client)
-        return;
     if (!response) {
         m_client->didHandleFetchEvent(fetchEventID);
         return;
@@ -68,6 +65,11 @@ void ServiceWorkerGlobalScopeClientImpl::didHandleFetchEvent(int fetchEventID, P
     m_client->didHandleFetchEvent(fetchEventID, webResponse);
 }
 
+void ServiceWorkerGlobalScopeClientImpl::didHandleSyncEvent(int syncEventID)
+{
+    m_client->didHandleSyncEvent(syncEventID);
+}
+
 ServiceWorkerGlobalScopeClientImpl::ServiceWorkerGlobalScopeClientImpl(PassOwnPtr<WebServiceWorkerContextClient> client)
     : m_client(client)
 {

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeClientImpl.h

@@ -45,6 +45,7 @@ public:
 
     virtual void didHandleInstallEvent(int installEventID, WebServiceWorkerEventResult) OVERRIDE;
     virtual void didHandleFetchEvent(int fetchEventID, PassRefPtr<WebCore::Response>) OVERRIDE;
+    virtual void didHandleSyncEvent(int syncEventID) OVERRIDE;
 
 private:
     ServiceWorkerGlobalScopeClientImpl(PassOwnPtr<WebServiceWorkerContextClient>);

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp

@@ -85,6 +85,13 @@ void ServiceWorkerGlobalScopeProxy::dispatchMessageEvent(const WebString& messag
     m_workerGlobalScope->dispatchEvent(MessageEvent::create(ports.release(), value));
 }
 
+void ServiceWorkerGlobalScopeProxy::dispatchSyncEvent(int eventID)
+{
+    ASSERT(m_workerGlobalScope);
+    m_workerGlobalScope->dispatchEvent(Event::create(EventTypeNames::sync));
+    ServiceWorkerGlobalScopeClient::from(m_workerGlobalScope)->didHandleSyncEvent(eventID);
+}
+
 void ServiceWorkerGlobalScopeProxy::reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL)
 {
     m_client.reportException(errorMessage, lineNumber, columnNumber, sourceURL);

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h

@@ -69,6 +69,7 @@ public:
     virtual void dispatchInstallEvent(int) OVERRIDE;
     virtual void dispatchFetchEvent(int) OVERRIDE;
     virtual void dispatchMessageEvent(const WebString& message, const WebMessagePortChannelArray&) OVERRIDE;
+    virtual void dispatchSyncEvent(int) OVERRIDE;
 
     // WorkerReportingProxy overrides:
     virtual void reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL) OVERRIDE;

third_party/WebKit/public/web/WebServiceWorkerContextClient.h

@@ -95,6 +95,11 @@ public:
 
     // Ownership of the returned object is transferred to the caller.
     virtual WebServiceWorkerNetworkProvider* createServiceWorkerNetworkProvider(blink::WebDataSource*) { return 0; }
+
+    // ServiceWorker specific method. Called after SyncEvent (dispatched via
+    // WebServiceWorkerContextProxy) is handled by the ServiceWorker's script
+    // context.
+    virtual void didHandleSyncEvent(int syncEventID) { }
 };
 
 } // namespace blink

third_party/WebKit/public/web/WebServiceWorkerContextProxy.h

@@ -50,6 +50,10 @@ public:
 
     virtual void dispatchMessageEvent(const WebString& message, const WebMessagePortChannelArray& channels) = 0;
 
+    // Once the ServiceWorker has finished handling the sync event
+    // didHandleSyncEvent is called on the context client.
+    virtual void dispatchSyncEvent(int syncEventID) = 0;
+
     virtual void resumeWorkerContext() { }
     virtual void attachDevTools() { }
     virtual void reattachDevTools(const WebString& savedState) { }