Set up Mojo connection when RenderFrameHost is reused for new RenderFrame

content/browser/frame_host/frame_tree.cc

Index: content/browser/frame_host/frame_tree.cc
diff --git a/content/browser/frame_host/frame_tree.cc b/content/browser/frame_host/frame_tree.cc
index 27ed57ff1a32d0cfdabf81af901f6e28b2e0d496..99a6ca9d392e5b398fad66c1e2dcbf9cd0ce3c62 100644
--- a/content/browser/frame_host/frame_tree.cc
+++ b/content/browser/frame_host/frame_tree.cc
@@ -230,6 +230,10 @@ void FrameTree::RenderProcessGone(RenderViewHost* render_view_host) {
   // ForEach does not add a node's children to the queue until after visiting
   // the node itself.
   ForEach(base::Bind(&ResetNodesForNewProcess, render_view_host));
+
+  // Ensure that if the main frame is reused for a new RenderFrame, it will
+  // set up the Mojo connection with that frame.
+  GetMainFrame()->InvalidateMojoConnection();

[Charlie Reis, 2014/10/23 18:38:31]

I don't think we want to do this on the main frame.  We get here for subframe
crashes (in --site-per-process mode) as well.  It should probably happen on the
frame itself in ResetNodesForNewProcess.

[blundell, 2014/10/24 14:42:54]

Done.

 }
 
 RenderFrameHostImpl* FrameTree::GetMainFrame() const {