Mac: Re-fix hidden CoreAnimation plugins.

chrome/browser/renderer_host/accelerated_surface_container_mac.h

 // Copyright (c) 2010 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 CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MAC_H_
 #define CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MAC_H_
 #pragma once
 
 // The "GPU plugin" is currently implemented as a special kind of
 // NPAPI plugin to provide high-performance on-screen 3D rendering for
@@ skipping 57 matching lines @@
 
   // Draws this accelerated surface's contents, texture mapped onto a quad in
   // the given OpenGL context. TODO(kbr): figure out and define exactly how the
   // coordinate system will work out.
   void Draw(CGLContextObj context);
 
   // Causes the next Draw call to trigger a texture upload. Should be called any
   // time the drawing context has changed.
   void ForceTextureReload() { texture_needs_upload_ = true; }
 
+  // Notifies the surface that it was painted to.
+  void set_was_painted_to() { was_painted_to_ = true; }
+
+  // Returns if the surface should be shown.
+  bool should_be_visible() const { return visible_ && was_painted_to_; }
  private:
   // The manager of this accelerated surface container.
   AcceleratedSurfaceContainerManagerMac* manager_;
 
   // Whether this accelerated surface's content is supposed to be opaque.
   bool opaque_;
 
   // The IOSurfaceRef, if any, that has been handed from the GPU
   // plugin process back to the browser process for drawing.
   // This is held as a CFTypeRef because we can't refer to the
@@ skipping 19 matching lines @@
   // with it.
   GLuint texture_;
 
   // True if we need to upload the texture again during the next draw.
   bool texture_needs_upload_;
 
   // This may refer to an old version of the texture if the container is
   // resized, for example.
   GLuint texture_pending_deletion_;
 
+  // Stores if the plugin has a visible state.
+  bool visible_;
+
+  // Stores if the plugin's IOSurface has been swapped before. Used to not show
+  // it before it hasn't been painted to at least once.
+  bool was_painted_to_;
+
   // Releases the IOSurface reference, if any, retained by this object.
   void ReleaseIOSurface();
 
   // Enqueue our texture for later deletion.
   void EnqueueTextureForDeletion();
 
   DISALLOW_COPY_AND_ASSIGN(AcceleratedSurfaceContainerMac);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MAC_H_