Allow a main interstitial frame to act as an ExtensionMessagePort opener

content/browser/frame_host/render_frame_host_delegate.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_RENDER_FRAME_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 13 matching lines @@
 #endif
 
 class GURL;
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
 class GeolocationServiceContext;
+class InterstitialPage;
 class PageState;
 class RenderFrameHost;
 class WakeLockServiceContext;
 class WebContents;
 struct AXEventNotificationDetails;
 struct ContextMenuParams;
 struct TransitionLayerData;
 
 // An interface implemented by an object interested in knowing about the state
 // of the RenderFrameHost.
@@ skipping 65 matching lines @@
 
   // The page's encoding was changed and should be updated. Only called for the
   // top-level frame.
   virtual void UpdateEncoding(RenderFrameHost* render_frame_host,
                               const std::string& encoding) {}
 
   // Return this object cast to a WebContents, if it is one. If the object is
   // not a WebContents, returns NULL.
   virtual WebContents* GetAsWebContents();
 
+  // Returns this object cast to an InterstitialPage if it is one. Returns
+  // nullptr otherwise.
+  virtual InterstitialPage* GetAsInterstitialPage();
+
   // The render frame has requested access to media devices listed in
   // |request|, and the client should grant or deny that permission by
   // calling |callback|.
   virtual void RequestMediaAccessPermission(
       const MediaStreamRequest& request,
       const MediaResponseCallback& callback);
 
   // Checks if we have permission to access the microphone or camera. Note that
   // this does not query the user. |type| must be MEDIA_DEVICE_AUDIO_CAPTURE
   // or MEDIA_DEVICE_VIDEO_CAPTURE.
@@ skipping 55 matching lines @@
   virtual gfx::NativeViewAccessible GetParentNativeViewAccessible();
 #endif
 
  protected:
   virtual ~RenderFrameHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_