Mandate unique_ptr for base::IDMap in IDMapOwnPointer mode.

third_party/WebKit/public/platform/modules/serviceworker/WebServiceWorkerProvider.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 49 matching lines @@
       WebCallbacks<std::unique_ptr<WebServiceWorkerRegistration::Handle>,
                    const WebServiceWorkerError&>;
 
   // Each element's ownership is transferred.
   using WebServiceWorkerGetRegistrationsCallbacks = WebCallbacks<
       std::unique_ptr<WebVector<WebServiceWorkerRegistration::Handle*>>,
       const WebServiceWorkerError&>;
   using WebServiceWorkerGetRegistrationForReadyCallbacks =
       WebCallbacks<std::unique_ptr<WebServiceWorkerRegistration::Handle>, void>;
 
-  virtual void registerServiceWorker(const WebURL& pattern,
-                                     const WebURL& scriptUrl,
-                                     WebServiceWorkerRegistrationCallbacks*) {}
-  virtual void getRegistration(const WebURL& documentURL,
-                               WebServiceWorkerGetRegistrationCallbacks*) {}
-  virtual void getRegistrations(WebServiceWorkerGetRegistrationsCallbacks*) {}
+  virtual void registerServiceWorker(
+      const WebURL& pattern,
+      const WebURL& scriptUrl,
+      std::unique_ptr<WebServiceWorkerRegistrationCallbacks>) {}
+  virtual void getRegistration(
+      const WebURL& documentURL,
+      std::unique_ptr<WebServiceWorkerGetRegistrationCallbacks>) {}
+  virtual void getRegistrations(
+      std::unique_ptr<WebServiceWorkerGetRegistrationsCallbacks>) {}
   virtual void getRegistrationForReady(
-      WebServiceWorkerGetRegistrationForReadyCallbacks*) {}
+      std::unique_ptr<WebServiceWorkerGetRegistrationForReadyCallbacks>) {}
   virtual bool validateScopeAndScriptURL(const WebURL& scope,
                                          const WebURL& scriptURL,
                                          WebString* errorMessage) {
     return false;
   }
 
   virtual ~WebServiceWorkerProvider() {}
 };
 
 }  // namespace blink
 
 #endif