Allow asynchronous deferral in NavigationSimulator

content/browser/frame_host/navigation_request.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_NAVIGATION_REQUEST_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_REQUEST_H_
 
 #include <memory>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
+#include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/loader/navigation_url_loader_delegate.h"
 #include "content/common/content_export.h"
 #include "content/common/frame_message_enums.h"
 #include "content/common/navigation_params.h"
 #include "content/public/browser/navigation_throttle.h"
 #include "content/public/common/previews_state.h"
 
 namespace content {
 
 class FrameNavigationEntry;
@@ skipping 130 matching lines @@
   void CreateNavigationHandle(int pending_nav_entry_id);
 
   // Transfers the ownership of the NavigationHandle to |render_frame_host|.
   // This should be called when the navigation is ready to commit, because the
   // NavigationHandle outlives the NavigationRequest. The NavigationHandle's
   // lifetime is the entire navigation, while the NavigationRequest is
   // destroyed when a navigation is ready for commit.
   void TransferNavigationHandleOwnership(
       RenderFrameHostImpl* render_frame_host);
 
-  void set_on_start_checks_complete_closure_for_testing(
-      const base::Closure& closure) {
-    on_start_checks_complete_closure_ = closure;
+  void set_on_checks_complete_callback_for_testing(
+      const NavigationHandleImpl::ThrottleChecksFinishedCallback& callback) {
+    on_checks_complete_callback_ = callback;
   }
 
  private:
   NavigationRequest(FrameTreeNode* frame_tree_node,
                     const CommonNavigationParams& common_params,
                     const BeginNavigationParams& begin_params,
                     const RequestNavigationParams& request_params,
                     bool browser_initiated,
                     bool may_transfer,
                     const FrameNavigationEntry* frame_navigation_entry,
@@ skipping 69 matching lines @@
   // is enabled.
   bool may_transfer_;
 
   std::unique_ptr<NavigationHandleImpl> navigation_handle_;
 
   // Holds the ResourceResponse and the StreamHandle for the navigation while
   // the WillProcessResponse checks are performed by the NavigationHandle.
   scoped_refptr<ResourceResponse> response_;
   std::unique_ptr<StreamHandle> body_;
 
-  base::Closure on_start_checks_complete_closure_;
+  NavigationHandleImpl::ThrottleChecksFinishedCallback
+      on_checks_complete_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationRequest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_REQUEST_H_