Fix the commit type for out-of-process iframes.

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 f9c71e76d3b413f2f4e199ace4dc48439216ea3e..2bfd5357d2d263636d4c0e548cab9277983139e4 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -4406,6 +4406,13 @@ void RenderFrameImpl::NavigateInternal(
 
   GetContentClient()->SetActiveURL(common_params.url);
 
+  // If this frame isn't in the same process as the main frame, it may naively
+  // assume that this is the first navigation in the iframe, but this may not
+  // actually be the case. Inform the frame's state machine if this frame has
+  // already committed other loads.
+  if (request_params.has_committed_real_load && frame_->parent())
+    frame_->setCommittedFirstRealLoad();
+
   if (is_reload && !render_view_->history_controller()->GetCurrentEntry()) {
     // We cannot reload if we do not have any history state.  This happens, for
     // example, when recovering from a crash.