Make RenderFrame(Host) own a RenderWidget(Host).

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index d42c1c1062aa9bce26012e5ef0a3a56f74af2ee8..b1940d7fdfb198263da1066b964e150e165bb9bc 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -190,6 +190,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   // menus, and other times when the renderer initiates creating an object.
   virtual void Init();
 
+  // Initializes a RenderWidgetHost that is attached to a Frame.

[nasko, 2015/01/14 20:08:05]

nit: s/Frame/RenderFrameHost/

[kenrb, 2015/01/15 22:41:46]

Done.

+  void InitForFrame();
+
   // Tells the renderer to die and then calls Destroy().
   virtual void Shutdown();
 
@@ -823,6 +826,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl
       base::Callback<void(const unsigned char*, size_t)> > PendingSnapshotMap;
   PendingSnapshotMap pending_browser_snapshots_;
 
+  // Ownership by RenderFrameHost has lifetime implications.

[nasko, 2015/01/14 20:08:04]

Can you add what those implications are?

[kenrb, 2015/01/15 22:41:46]

Done.

+  bool owned_by_render_frame_host_;
+
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);