3D Compositing in <browser>, first draft.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index fc80140e3606f467b22478eed8bb83b8b9c090e1..31264699646d457a5f2dc81685b9333f16ca96f9 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -3060,11 +3060,16 @@ bool WebContentsImpl::CreateRenderViewForRenderManager(
   int32 max_page_id =
       GetMaxPageIDForSiteInstance(render_view_host->GetSiteInstance());
 
-  std::string embedder_channel_name;
-  int embedder_container_id;
-  GetBrowserPluginEmbedderInfo(render_view_host,
-                               &embedder_channel_name,
-                               &embedder_container_id);
+  content::NotificationService::current()->Notify(
+      content::NOTIFICATION_WILL_CREATE_RENDER_VIEW,
+      content::Source<WebContents>(this),
+      content::Details<RenderViewHost>(render_view_host));
+
+   std::string embedder_channel_name;
+   int embedder_container_id;
+   GetBrowserPluginEmbedderInfo(render_view_host,
+                                &embedder_channel_name,
+                                &embedder_container_id);

[scshunt, 2012/08/12 01:42:45]

The indentation is off, here. And this seems /really/ fragile, since the
ordering is important. A comment should be here at the very least, explaining
why the notification must go through first.

[scshunt, 2012/08/17 17:30:28]

In retrospect, I don't know what I was talking about.

   if (!static_cast<RenderViewHostImpl*>(
           render_view_host)->CreateRenderView(string16(),
                                               opener_route_id,