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

Source/modules/serviceworkers/ServiceWorkerContainer.h

Index: Source/modules/serviceworkers/ServiceWorkerContainer.h
diff --git a/Source/modules/serviceworkers/ServiceWorkerContainer.h b/Source/modules/serviceworkers/ServiceWorkerContainer.h
index 9d373f65ec6c3d3a27868481adaddbb773762f7d..e8531c347770a057acf66bc6226c63ea8cca99eb 100644
--- a/Source/modules/serviceworkers/ServiceWorkerContainer.h
+++ b/Source/modules/serviceworkers/ServiceWorkerContainer.h
@@ -97,6 +97,7 @@ private:
     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