Make Graphics3D::SwapBuffers take a completion callback

webkit/glue/plugins/pepper_graphics_3d.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 WEBKIT_GLUE_PLUGINS_PEPPER_GRAPHICS_3D_H_
 #define WEBKIT_GLUE_PLUGINS_PEPPER_GRAPHICS_3D_H_
 
 #include "base/callback.h"
 #include "base/scoped_ptr.h"
 #include "gfx/size.h"
@@ skipping 36 matching lines @@
             const int32_t* attrib_list);
 
   // Associates this Graphics3D with the given plugin instance. You can pass
   // NULL to clear the existing device. Returns true on success. In this case,
   // the last rendered frame is displayed.
   // TODO(apatrick): Figure out the best semantics here.
   bool BindToInstance(PluginInstance* new_instance);
 
   bool MakeCurrent();
 
-  bool SwapBuffers();
+  bool SwapBuffers(PP_CompletionCallback callback);
 
   unsigned GetError();
 
   void ResizeBackingTexture(const gfx::Size& size);
 
   void SetSwapBuffersCallback(Callback0::Type* callback);
 
+  void ViewInitiatedPaint();
+  void ViewFlushedPaint();
+
   unsigned GetBackingTextureId();
 
   gpu::gles2::GLES2Implementation* impl() {
     return gles2_implementation_;
   }
 
  private:
   void Destroy();
 
   // Non-owning pointer to the plugin instance this context is currently bound
   // to, if any. If the context is currently unbound, this will be NULL.
   PluginInstance* bound_instance_;
 
+  // True when the page's SwapBuffers has been issued but not returned yet.
+  bool swap_initiated_;
+  PP_CompletionCallback swap_callback_;
+
   // PluginDelegate's 3D Context. Responsible for providing the command buffer.
   scoped_ptr<PluginDelegate::PlatformContext3D> platform_context_;
 
   // GLES2 Implementation instance. Owned by the platform context's GGL context.
   gpu::gles2::GLES2Implementation* gles2_implementation_;
 };
 
 }  // namespace pepper
 
 #endif  // WEBKIT_GLUE_PLUGINS_PEPPER_GRAPHICS_3D_H_