Add two interfaces for ServiceWorkerProviderContext/ProviderHost

content/browser/service_worker/service_worker_navigation_handle_core.h

Index: content/browser/service_worker/service_worker_navigation_handle_core.h
diff --git a/content/browser/service_worker/service_worker_navigation_handle_core.h b/content/browser/service_worker/service_worker_navigation_handle_core.h
index 88e5013c9d20ac5fb2b5d735023f84eab912e250..8e98b058739a23805c904abdee9fc7800f670556 100644
--- a/content/browser/service_worker/service_worker_navigation_handle_core.h
+++ b/content/browser/service_worker/service_worker_navigation_handle_core.h
@@ -10,6 +10,7 @@
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "content/common/content_export.h"
 
 namespace content {
 
@@ -24,7 +25,7 @@ class ServiceWorkerProviderHost;
 // pendant of ServiceWorkerNavigationHandle. See the
 // ServiceWorkerNavigationHandle header for more details about the lifetime of
 // both classes.
-class ServiceWorkerNavigationHandleCore {
+class CONTENT_EXPORT ServiceWorkerNavigationHandleCore {
  public:
   ServiceWorkerNavigationHandleCore(
       base::WeakPtr<ServiceWorkerNavigationHandle> ui_handle,