Propagate inert state to OOPIFs when a modal dialog is active

content/browser/frame_host/cross_process_frame_connector.cc

Index: content/browser/frame_host/cross_process_frame_connector.cc
diff --git a/content/browser/frame_host/cross_process_frame_connector.cc b/content/browser/frame_host/cross_process_frame_connector.cc
index 1ca49b4e402412afe8f5e5282ec3a5df73b00661..2160a4913bf856972f204030057f1f16e952cbd2 100644
--- a/content/browser/frame_host/cross_process_frame_connector.cc
+++ b/content/browser/frame_host/cross_process_frame_connector.cc
@@ -44,6 +44,7 @@ bool CrossProcessFrameConnector::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameHostMsg_UpdateViewportIntersection,
                         OnUpdateViewportIntersection)
     IPC_MESSAGE_HANDLER(FrameHostMsg_VisibilityChanged, OnVisibilityChanged)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_SetIsInert, OnSetIsInert)
     IPC_MESSAGE_HANDLER(FrameHostMsg_SatisfySequence, OnSatisfySequence)
     IPC_MESSAGE_HANDLER(FrameHostMsg_RequireSequence, OnRequireSequence)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -277,6 +278,11 @@ void CrossProcessFrameConnector::OnVisibilityChanged(bool visible) {
   }
 }
 
+void CrossProcessFrameConnector::OnSetIsInert(bool inert) {
+  if (view_)
+    view_->SetIsInert(inert);
+}
+
 void CrossProcessFrameConnector::SetRect(const gfx::Rect& frame_rect) {
   gfx::Rect old_rect = child_frame_rect_;
   child_frame_rect_ = frame_rect;