Revert "Ensure we properly set PageTransition for iframes."

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 57ba8e25e3fd7eb743d7353b2d3916aae34a1f5e..b7b4ee8e8e403cd8e248ae9e7682780fbd36a081 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -1672,14 +1672,8 @@ void RenderFrameHostImpl::OpenURL(const FrameHostMsg_OpenURL_Params& params,
 
   TRACE_EVENT1("navigation", "RenderFrameHostImpl::OpenURL", "url",
                validated_url.possibly_invalid_spec());
-  ui::PageTransition transition = ui::PAGE_TRANSITION_LINK;
-  if (frame_tree_node_->parent()) {
-    transition = params.should_replace_current_entry
-                     ? ui::PAGE_TRANSITION_AUTO_SUBFRAME
-                     : ui::PAGE_TRANSITION_MANUAL_SUBFRAME;
-  }
   frame_tree_node_->navigator()->RequestOpenURL(
-      this, validated_url, source_site_instance, params.referrer, transition,
+      this, validated_url, source_site_instance, params.referrer,
       params.disposition, params.should_replace_current_entry,
       params.user_gesture);
 }