Identify service worker version at main resource load time.

content/renderer/service_worker/embedded_worker_context_client.h

Index: content/renderer/service_worker/embedded_worker_context_client.h
diff --git a/content/renderer/service_worker/embedded_worker_context_client.h b/content/renderer/service_worker/embedded_worker_context_client.h
index 6e6d3d8c183b6780a6f5a5f0042961d522ad7848..fa5625c2be28ca67c90d0caac737b8363e38dc32 100644
--- a/content/renderer/service_worker/embedded_worker_context_client.h
+++ b/content/renderer/service_worker/embedded_worker_context_client.h
@@ -18,6 +18,10 @@ class MessageLoopProxy;
 class TaskRunner;
 }
 
+namespace blink {
+class WebDataSource;
+}
+
 namespace content {
 
 class ServiceWorkerScriptContext;
@@ -25,6 +29,7 @@ class ThreadSafeSender;
 
 // This class provides access to/from an embedded worker's WorkerGlobalScope.
 // All methods other than the constructor (it's created on the main thread)
+// and createServiceWorkerNetworkProvider (also called on the main thread)
 // are called on the worker thread.
 //
 // TODO(kinuko): Currently EW/SW separation is made a little hazily.
@@ -60,6 +65,8 @@ class EmbeddedWorkerContextClient
   virtual void didHandleFetchEvent(
       int request_id,
       const blink::WebServiceWorkerResponse& response);
+  virtual blink::WebServiceWorkerNetworkProvider*
+      createServiceWorkerNetworkProvider(blink::WebDataSource* data_source);
 
   // TODO: Implement DevTools related method overrides.