Implement the ServiceWorker "activate" event during activation

content/renderer/service_worker/service_worker_script_context.cc

Index: content/renderer/service_worker/service_worker_script_context.cc
diff --git a/content/renderer/service_worker/service_worker_script_context.cc b/content/renderer/service_worker/service_worker_script_context.cc
index 2043e7821474089aedbdddb3a555aefbbcaeec35..64c9f394c00dcb84fb14726e745d82dcd4a8309c 100644
--- a/content/renderer/service_worker/service_worker_script_context.cc
+++ b/content/renderer/service_worker/service_worker_script_context.cc
@@ -30,8 +30,9 @@ void ServiceWorkerScriptContext::OnMessageReceived(
   current_request_id_ = request_id;
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ServiceWorkerScriptContext, message)
-    IPC_MESSAGE_HANDLER(ServiceWorkerMsg_InstallEvent, OnInstallEvent)
+    IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ActivateEvent, OnActivateEvent)
     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_FetchEvent, OnFetchEvent)
+    IPC_MESSAGE_HANDLER(ServiceWorkerMsg_InstallEvent, OnInstallEvent)
     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_Message, OnPostMessage)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
@@ -39,6 +40,12 @@ void ServiceWorkerScriptContext::OnMessageReceived(
   current_request_id_ = kInvalidServiceWorkerRequestId;
 }
 
+void ServiceWorkerScriptContext::DidHandleActivateEvent(
+    int request_id,
+    blink::WebServiceWorkerEventResult result) {
+  Send(request_id, ServiceWorkerHostMsg_ActivateEventFinished(result));
+}
+
 void ServiceWorkerScriptContext::DidHandleInstallEvent(
     int request_id,
     blink::WebServiceWorkerEventResult result) {
@@ -57,6 +64,10 @@ void ServiceWorkerScriptContext::Send(int request_id,
   embedded_context_->SendMessageToBrowser(request_id, message);
 }
 
+void ServiceWorkerScriptContext::OnActivateEvent() {
+  proxy_->dispatchActivateEvent(current_request_id_);
+}
+
 void ServiceWorkerScriptContext::OnInstallEvent(int active_version_id) {
   proxy_->dispatchInstallEvent(current_request_id_);
 }