ServiceWorker: Release a reference when it fails to dispatch ExtendableMessageEvent

content/browser/service_worker/embedded_worker_test_helper.h

Index: content/browser/service_worker/embedded_worker_test_helper.h
diff --git a/content/browser/service_worker/embedded_worker_test_helper.h b/content/browser/service_worker/embedded_worker_test_helper.h
index 40de8b3c73eea105dfc27b48091751b785c6a923..ea98c131337a9d9179916321d0110a0e53176793 100644
--- a/content/browser/service_worker/embedded_worker_test_helper.h
+++ b/content/browser/service_worker/embedded_worker_test_helper.h
@@ -21,8 +21,9 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
-struct EmbeddedWorkerMsg_StartWorker_Params;
 class GURL;
+struct EmbeddedWorkerMsg_StartWorker_Params;
+struct ServiceWorkerMsg_ExtendableMessageEvent_Params;
 
 namespace content {
 
@@ -30,11 +31,11 @@ class EmbeddedWorkerRegistry;
 class EmbeddedWorkerTestHelper;
 class MessagePortMessageFilter;
 class MockRenderProcessHost;
-struct PushEventPayload;
 class ServiceWorkerContextCore;
 class ServiceWorkerContextWrapper;
-struct ServiceWorkerFetchRequest;
 class TestBrowserContext;
+struct PushEventPayload;
+struct ServiceWorkerFetchRequest;
 
 // In-Process EmbeddedWorker test helper.
 //
@@ -122,6 +123,7 @@ class EmbeddedWorkerTestHelper : public IPC::Sender,
   // worker. By default they just return success via
   // SimulateSendReplyToBrowser.
   virtual void OnActivateEvent(int embedded_worker_id, int request_id);
+  virtual void OnExtendableMessageEvent(int embedded_worker_id, int request_id);
   virtual void OnInstallEvent(int embedded_worker_id, int request_id);
   virtual void OnFetchEvent(int embedded_worker_id,
                             int request_id,
@@ -153,6 +155,9 @@ class EmbeddedWorkerTestHelper : public IPC::Sender,
                              int embedded_worker_id,
                              const IPC::Message& message);
   void OnActivateEventStub(int request_id);
+  void OnExtendableMessageEventStub(
+      int request_id,
+      const ServiceWorkerMsg_ExtendableMessageEvent_Params& params);
   void OnInstallEventStub(int request_id);
   void OnFetchEventStub(int request_id,
                         const ServiceWorkerFetchRequest& request);