Expose the ServiceWorker's v8 context to embedders.

Source/web/ServiceWorkerGlobalScopeProxy.h

Index: Source/web/ServiceWorkerGlobalScopeProxy.h
diff --git a/Source/web/ServiceWorkerGlobalScopeProxy.h b/Source/web/ServiceWorkerGlobalScopeProxy.h
index a260dab301a97236c9d235b08fa937272565351d..cf145a9c3079987969ab92eb74a6d921f0469da2 100644
--- a/Source/web/ServiceWorkerGlobalScopeProxy.h
+++ b/Source/web/ServiceWorkerGlobalScopeProxy.h
@@ -39,6 +39,7 @@
 
 namespace WebCore {
 class ExecutionContext;
+class ScriptSourceCode;
 }
 
 namespace blink {
@@ -67,6 +68,9 @@ public:
     static PassOwnPtr<ServiceWorkerGlobalScopeProxy> create(WebEmbeddedWorkerImpl&, WebCore::ExecutionContext&, WebServiceWorkerContextClient&);
     virtual ~ServiceWorkerGlobalScopeProxy();
 
+    // Evaluates code in the worker's javascript context.  (Can be passed a plain String.)
+    void evaluate(const WebCore::ScriptSourceCode&);
+
     // WebServiceWorkerContextProxy overrides:
     virtual void dispatchActivateEvent(int) OVERRIDE;
     virtual void dispatchInstallEvent(int) OVERRIDE;
@@ -74,6 +78,7 @@ public:
     virtual void dispatchMessageEvent(const WebString& message, const WebMessagePortChannelArray&) OVERRIDE;
     virtual void dispatchPushEvent(int, const WebString& data) OVERRIDE;
     virtual void dispatchSyncEvent(int) OVERRIDE;
+    virtual v8::Handle<v8::Context> v8Context() OVERRIDE;
 
     // WorkerReportingProxy overrides:
     virtual void reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL) OVERRIDE;