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 9d959fb9b2f949da2770a4668e5611804d651ac1..063d48de89dafac8e2f9bd4f903df59f3fa4966c 100644
--- a/content/renderer/service_worker/embedded_worker_context_client.h
+++ b/content/renderer/service_worker/embedded_worker_context_client.h
@@ -17,6 +17,10 @@ class MessageLoopProxy;
 class TaskRunner;
 }
 
+namespace blink {
+class WebDataSource;
+}
+
 namespace content {
 
 class ServiceWorkerScriptContext;
@@ -24,6 +28,7 @@ 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 didCreateDataSource (which is also created on the main thread)
 // are called on the worker thread.
 //
 // TODO(kinuko): Currently EW/SW separation is made a little hazily.
@@ -45,6 +50,11 @@ class EmbeddedWorkerContextClient
 
   virtual ~EmbeddedWorkerContextClient();
 
+  // Called on the main thread prior to main script resource load time.
+  // fyi: ShadowDoc's WebFrameClient calls this from within it's
+  // didCreateDataSource method.
+  virtual void didCreateDataSource(blink::WebDataSource*);
+
   bool OnMessageReceived(const IPC::Message& msg);
 
   void SendMessageToBrowser(int request_id, const IPC::Message& message);