Add ViewHostMsg_DocumentDetached to SwappedOutMessages::CanSendWhileSwappedOut.

content/common/swapped_out_messages.cc

Index: content/common/swapped_out_messages.cc
diff --git a/content/common/swapped_out_messages.cc b/content/common/swapped_out_messages.cc
index 855b78642873ec1e5c4ec40cdabf27a86e835d5b..f26193469123c6b2f2340c7f6e423773e14530b0 100644
--- a/content/common/swapped_out_messages.cc
+++ b/content/common/swapped_out_messages.cc
@@ -31,6 +31,9 @@ bool SwappedOutMessages::CanSendWhileSwappedOut(const IPC::Message* msg) {
     case ViewHostMsg_SwapCompositorFrame::ID:
     case ViewHostMsg_UpdateIsDelayed::ID:
     case ViewHostMsg_DidActivateAcceleratedCompositing::ID:
+    // Handled by WorkerMessageFilter (or by SharedWorkerMessageFilter when
+    // embedded-shared-worker is enabled).
+    case ViewHostMsg_DocumentDetached::ID:
     // Allow cross-process JavaScript calls.
     case ViewHostMsg_RouteCloseEvent::ID:
     case ViewHostMsg_RouteMessageEvent::ID: