Use caller's document url to resolve scriptURL/patternURL in registerServiceWorker/getRegistration

Source/modules/serviceworkers/ServiceWorkerContainer.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 79 matching lines @@
 private:
     explicit ServiceWorkerContainer(ExecutionContext*);
 
     typedef ScriptPromiseProperty<Member<ServiceWorkerContainer>, Member<ServiceWorkerRegistration>, Member<ServiceWorkerRegistration> > ReadyProperty;
     ReadyProperty* createReadyProperty();
 
     WebServiceWorkerProvider* m_provider;
     RefPtrWillBeMember<ServiceWorker> m_controller;
     Member<ServiceWorkerRegistration> m_readyRegistration;
     Member<ReadyProperty> m_ready;
+    RawPtrWillBeMember<ExecutionContext> m_executionContext;

[dominicc (has gone to gerrit), 2015/01/19 03:19:08]

Likewise, does this potentially cause a cycle? Because ServiceWorkerContainer is
a ContextLifecycleObserver, can it simply retrieve the execution context with
executionContext()?

ContextLifecycleObserver does not create leaks because executionContext() is
reset to null when the ExecutionContext is dying.

 };
 
 } // namespace blink
 
 #endif // ServiceWorkerContainer_h