Create NavigationHandles for interstitials if needed

content/browser/frame_host/navigator.h

 // Copyright 2013 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_NAVIGATOR_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/navigator_delegate.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
 #include "ui/base/window_open_disposition.h"
 
 class GURL;
 struct FrameHostMsg_BeginNavigation_Params;
 struct FrameHostMsg_DidCommitProvisionalLoad_Params;
 struct FrameHostMsg_DidFailProvisionalLoadWithError_Params;
 
 namespace base {
 class TimeTicks;
 }
 
 namespace content {
 
 class FrameNavigationEntry;
 class FrameTreeNode;
 class NavigationControllerImpl;
 class NavigationEntryImpl;
+class NavigationHandleImpl;
 class NavigationRequest;
 class RenderFrameHostImpl;
 class ResourceRequestBodyImpl;
 class StreamHandle;
 struct BeginNavigationParams;
 struct CommonNavigationParams;
 struct ResourceResponse;
 
 // Implementations of this interface are responsible for performing navigations
 // in a node of the FrameTree. Its lifetime is bound to all FrameTreeNode
@@ skipping 132 matching lines @@
   // conventions.
   virtual void LogResourceRequestTime(
     base::TimeTicks timestamp, const GURL& url) {};
 
   // Called to record the time it took to execute the before unload hook for the
   // current navigation.
   virtual void LogBeforeUnloadTime(
       const base::TimeTicks& renderer_before_unload_start_time,
       const base::TimeTicks& renderer_before_unload_end_time) {}
 
+  // Returns the NavigationHandle associated with a navigation in
+  // |render_frame_host|. Normally, each frame can have its own
+  // NavigationHandle. However, in the case of a navigation to an interstitial
+  // page, there's just one NavigationHandle for the whole page (since it's
+  // assumed to only have one RenderFrameHost and navigate once).
+  virtual NavigationHandleImpl* GetNavigationHandleForFrameHost(
+      RenderFrameHostImpl* render_frame_host);
+
  protected:
   friend class base::RefCounted<Navigator>;
   virtual ~Navigator() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_