Propagate inert state to OOPIFs when a modal dialog is active

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

Index: third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp b/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
index 8a687b75995b91133e4d27afa39a57afd308e8fd..a114237bf33e2b2459b9398627798dc20bd503ce 100644
--- a/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
+++ b/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
@@ -774,6 +774,11 @@ void WebFrameWidgetImpl::SetRemoteViewportIntersection(
   }
 }
 
+void WebFrameWidgetImpl::SetIsInert(bool inert) {
+  DCHECK(local_root_->Parent() && local_root_->Parent()->IsWebRemoteFrame());
+  local_root_->GetFrame()->SetIsInert(inert);
+}
+
 void WebFrameWidgetImpl::HandleMouseLeave(LocalFrame& main_frame,
                                           const WebMouseEvent& event) {
   // FIXME: WebWidget doesn't have the method below.