Notifying the Out of Process Renderer about Visibility Change of a Remote Frame

content/browser/renderer_host/render_widget_host_delegate.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 "base/basictypes.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 
 namespace content {
 
 bool RenderWidgetHostDelegate::PreHandleKeyboardEvent(
@@ skipping 29 matching lines @@
 }
 #endif
 
 // If a delegate does not override this, the RenderWidgetHostView will
 // assume it is the sole platform event consumer.
 RenderWidgetHostInputEventRouter*
 RenderWidgetHostDelegate::GetInputEventRouter() {
   return nullptr;
 }
 
+// The only case this method should return true is when a guest WebContents
+// is the delegate (<guestview>).
+bool RenderWidgetHostDelegate::DidForwardVisibilityChangeToGuest(bool visible) {
+  return false;
+}
+
 }  // namespace content