Ensure RemoteViewportIntersection rect persists across frame navigations

content/browser/renderer_host/render_widget_host_impl.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 
 #include <set>
 #include <tuple>
@@ skipping 467 matching lines @@
     // On GTK, this comes in for backgrounded tabs. Ignore, to match what
     // happens on Win & Mac, and when the view is shown it'll call this again.
     return;
   }
 
   if (!view_)
     return;
 
   last_view_screen_rect_ = view_->GetViewBounds();
   last_window_screen_rect_ = view_->GetBoundsInRootWindow();
+  view_->WillSendScreenRects();
   Send(new ViewMsg_UpdateScreenRects(
       GetRoutingID(), last_view_screen_rect_, last_window_screen_rect_));
   waiting_for_screen_rects_ack_ = true;
 }
 
 void RenderWidgetHostImpl::OnBeginFrame() {
   if (begin_frame_callback_)
     std::move(begin_frame_callback_).Run();
 }
 
@@ skipping 2159 matching lines @@
           device::mojom::WakeLockType::PreventDisplaySleep,
           device::mojom::WakeLockReason::ReasonOther, "GetSnapshot",
           std::move(request));
     }
   }
   return wake_lock_.get();
 }
 #endif
 
 }  // namespace content