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 4951416730339897670b865961385f478e516c08..29cd25006bf22a8c0fd691f9a18df9623f6239b7 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.h
+++ b/content/browser/loader/resource_dispatcher_host_impl.h
@@ -25,6 +25,7 @@
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "content/browser/download/download_resource_handler.h"
+#include "content/browser/loader/async_revalidation_manager.h"
 #include "content/browser/loader/global_routing_id.h"
 #include "content/browser/loader/resource_loader.h"
 #include "content/browser/loader/resource_loader_delegate.h"
@@ -276,6 +277,10 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
                               const NavigationRequestInfo& info,
                               NavigationURLLoaderImplCore* loader);
 
+  // Turns on stale-while-revalidate support, regardless of command-line flags
+  // or experiment status. For unit tests only.
+  void EnableStaleWhileRevalidateForTesting();
+
  private:
   friend class ResourceDispatcherHostTest;
 
@@ -585,6 +590,10 @@ 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_;