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 67b0ef25ac8c4fc5520279b512a99649e2c9926b..50bc522ed0c50e4fb99c56a037f5a96930527033 100644
--- a/content/renderer/service_worker/embedded_worker_context_client.h
+++ b/content/renderer/service_worker/embedded_worker_context_client.h
@@ -19,6 +19,10 @@ class MessageLoopProxy;
 class TaskRunner;
 }
 
+namespace blink {
+class WebDataSource;
+}
+
 namespace content {
 
 class ServiceWorkerScriptContext;
@@ -26,6 +30,7 @@ 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.
@@ -62,6 +67,8 @@ 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.