Add filtering of IPC messages when RenderFrameHost is swapped out.

BUG=351815

Review URL: https://codereview.chromium.org/205543002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@258521 0039d316-1c4b-4281-b951-d872f2087c98
void RenderFrameHostImpl::Copy() {
  Send(new InputMsg_Copy(routing_id_));
  RecordAction(base::UserMetricsAction("Copy"));
}

void RenderFrameHostImpl::Copy() {
  Send(new InputMsg_Copy(routing_id_));
  RecordAction(base::UserMetricsAction("Copy"));
}
