Make printing work better with OOPIF. (try 2)

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 24a3b41ff0d54d1ea7c2a7bdf0e3bc2c5fc58e0c..df70a011bf97a45271eb3f3906a5dd709b1fc197 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1504,6 +1504,11 @@ MediaStreamDispatcher* RenderFrameImpl::GetMediaStreamDispatcher() {
              : nullptr;
 }
 
+void RenderFrameImpl::ScriptedPrint(bool user_initiated) {
+  for (auto& observer : observers_)
+    observer.ScriptedPrint(user_initiated);
+}
+
 bool RenderFrameImpl::Send(IPC::Message* message) {
   return RenderThread::Get()->Send(message);
 }