Hook embedded shell up to MojoShellConnection

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index 03a6f0c42fafe8bee6cd55c97b858fa9c6473005..4c6455f5f1eb291bc3a21e877e4389120181729c 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -414,6 +414,11 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // The globally-unique identifier for this RPH.
   const int id_;
 
+  // A secondary ID used by the Mojo shell to distinguish different incarnations
+  // of the same RPH from each other. Unlike |id_| this is not globally unique,
+  // but it is guaranteed to change every time Init() is called.
+  int instance_id_ = 1;
+
   BrowserContext* browser_context_;
 
   // Owned by |browser_context_|.