content::ResourceDispatcherHostImpl changes for stale-while-revalidate

content/browser/loader/resource_dispatcher_host_impl.h

Index: content/browser/loader/resource_dispatcher_host_impl.h
diff --git a/content/browser/loader/resource_dispatcher_host_impl.h b/content/browser/loader/resource_dispatcher_host_impl.h
index d9105fa52d8c2a3d7c858dbbf0cc7f5435bb13de..ed91e16c53ce3dd6362a4b18fa9f8e776927df10 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.h
+++ b/content/browser/loader/resource_dispatcher_host_impl.h
@@ -60,6 +60,7 @@ class ShareableFileReference;
 
 namespace content {
 class AppCacheService;
+class AsyncRevalidationManager;
 class NavigationURLLoaderImplCore;
 class ResourceContext;
 class ResourceDispatcherHostDelegate;
@@ -281,6 +282,10 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
       NavigationURLLoaderImplCore* loader,
       ServiceWorkerNavigationHandleCore* service_worker_handle_core);
 
+  // Turns on stale-while-revalidate support, regardless of command-line flags
+  // or experiment status. For unit tests only.
+  void EnableStaleWhileRevalidateForTesting();
+
  private:
   friend class ResourceDispatcherHostTest;
 
@@ -589,6 +594,10 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
 
   bool allow_cross_origin_auth_prompt_;
 
+  // AsyncRevalidationManager is non-NULL if and only if
+  // stale-while-revalidate is enabled.
+  scoped_ptr<AsyncRevalidationManager> async_revalidation_manager_;
+
   // http://crbug.com/90971 - Assists in tracking down use-after-frees on
   // shutdown.
   std::set<const ResourceContext*> active_resource_contexts_;