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

content/renderer/render_view_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 1325 matching lines @@
   bool cached_is_main_frame_pinned_to_right_;
 
   // These store the "has scrollbars" state last sent to the browser.
   bool cached_has_main_frame_horizontal_scrollbar_;
   bool cached_has_main_frame_vertical_scrollbar_;
 
   // Helper objects ------------------------------------------------------------
 
   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
   // along with the RenderView automatically.  This is why we just store
   // weak references.
 
   // Holds a reference to the service which provides desktop notifications.
   NotificationProvider* notification_provider_;
 
   // The geolocation dispatcher attached to this view, lazily initialized.
@@ skipping 173 matching lines @@
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_