3D Compositing in <browser>, first draft.

content/public/browser/notification_types.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_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #define CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #pragma once
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
@@ skipping 205 matching lines @@
   // a Source<WebContents>. The details is a bool set to true if the new
   // state is visible.
   NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED,
 
   // This notification is sent when a WebContents is being destroyed. Any
   // object holding a reference to a WebContents can listen to that
   // notification to properly reset the reference. The source is a
   // Source<WebContents>.
   NOTIFICATION_WEB_CONTENTS_DESTROYED,
 
+  // A RenderView will be created in a RenderViewHost for a WebContents. The
+  // source is the associated WebContents, and the details is the
+  // RenderViewHost pointer.
+  NOTIFICATION_WILL_CREATE_RENDER_VIEW,
+
+  // TODO(scshunt): Rename this notification as, with the addition of the
+  // previous one, this is now really confusing.
   // A RenderViewHost was created for a WebContents. The source is the
   // associated WebContents, and the details is the RenderViewHost
   // pointer.
   NOTIFICATION_RENDER_VIEW_HOST_CREATED_FOR_TAB,
 
   // Notification than an interstitial has become associated with a tab. The
   // source is the WebContents, the details not used.
   NOTIFICATION_INTERSTITIAL_ATTACHED,
 
   // Notification than an interstitial has become detached from a tab. The
@@ skipping 147 matching lines @@
   // of a temporary zoom level change, the details is an empty string.
   NOTIFICATION_ZOOM_LEVEL_CHANGED,
 
   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_