Create a new RenderFrameHost per child frame when --site-per-process is enabled.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index 2b18b3c032caee80ce125c09b580ceee16614a92..3e002f4a4803e522c2025fde8e6d0e50bd5c918b 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -1343,6 +1343,14 @@ class CONTENT_EXPORT RenderViewImpl
 
   scoped_ptr<RenderFrameImpl> main_render_frame_;
 
+  template <typename T> struct Closer {

[Charlie Reis, 2013/09/24 18:25:58]

I'm having trouble following what this does and why we need it.  Can you add a
comment clarifying?

[awong, 2013/09/26 21:25:24]

This has been removed. It was incorrect.

What it *was* doing was calling close() on whatever was in the scoped_ptr<>
instead of doing a delete.

+    inline void operator()(T* ptr) const {
+      if (ptr)
+        ptr->close();
+    }
+  };
+  scoped_ptr<WebKit::WebFrame, Closer<WebKit::WebFrame> > main_frame_;
+
   RendererWebCookieJarImpl cookie_jar_;
 
   // The next group of objects all implement RenderViewObserver, so are deleted