Propagate viewport intersection across OOPIFs at the correct time

third_party/WebKit/Source/core/frame/RemoteFrameView.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 RemoteFrameView_h
 #define RemoteFrameView_h
 
 #include "platform/FrameViewBase.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/heap/Handle.h"
@@ skipping 18 matching lines @@
 
   void Dispose() override;
   // Override to notify remote frame that its viewport size has changed.
   void FrameRectsChanged() override;
   void InvalidateRect(const IntRect&) override;
   void SetFrameRect(const IntRect&) override;
   void Hide() override;
   void Show() override;
   void SetParentVisible(bool) override;
 
+  void UpdateRemoteViewportIntersection();
+
   DECLARE_VIRTUAL_TRACE();
 
  private:
   explicit RemoteFrameView(RemoteFrame*);
 
-  void UpdateRemoteViewportIntersection();
-
   // The properties and handling of the cycle between RemoteFrame
   // and its RemoteFrameView corresponds to that between LocalFrame
   // and FrameView. Please see the FrameView::m_frame comment for
   // details.
   Member<RemoteFrame> remote_frame_;
 
   IntRect last_viewport_intersection_;
 };
 
 DEFINE_TYPE_CASTS(RemoteFrameView,
                   FrameViewBase,
                   frameViewBase,
                   frameViewBase->IsRemoteFrameView(),
                   frameViewBase.IsRemoteFrameView());
 
 }  // namespace blink
 
 #endif  // RemoteFrameView_h