Revert "Create ServiceWorkerProviderHost before starting worker"

content/browser/service_worker/service_worker_registration_handle.h

Index: content/browser/service_worker/service_worker_registration_handle.h
diff --git a/content/browser/service_worker/service_worker_registration_handle.h b/content/browser/service_worker/service_worker_registration_handle.h
index 1384604eec1714b51acb096aaa09aeaa6e611a28..e06b112e1f40a9998719b2007ad73ff10d65b477 100644
--- a/content/browser/service_worker/service_worker_registration_handle.h
+++ b/content/browser/service_worker/service_worker_registration_handle.h
@@ -12,7 +12,6 @@
 #include "base/memory/weak_ptr.h"
 #include "content/browser/service_worker/service_worker_registration.h"
 #include "content/browser/service_worker/service_worker_version.h"
-#include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_types.h"
 
 namespace content {
@@ -31,10 +30,10 @@ class ServiceWorkerVersion;
 //
 // Has a reference to the corresponding ServiceWorkerRegistration in order to
 // ensure that the registration is alive while this handle is around.
-class CONTENT_EXPORT ServiceWorkerRegistrationHandle
+class ServiceWorkerRegistrationHandle
     : public ServiceWorkerRegistration::Listener {
  public:
-  ServiceWorkerRegistrationHandle(
+  CONTENT_EXPORT ServiceWorkerRegistrationHandle(
       base::WeakPtr<ServiceWorkerContextCore> context,
       base::WeakPtr<ServiceWorkerProviderHost> provider_host,
       ServiceWorkerRegistration* registration);